E30 idle adjustment. ICVs rarely go wrong but can benefit from a clean.

E30 idle adjustment 0 m20, idle should be about 700-800rpm when warm Idle is controlled by the Idle Control Valve (on post 1988 cars) see pic below for location It can often get dirty, and can Honestly tho - my engine was really quiet after not adjusting valves for too long - a friend pointed it out, we did a compression test and got 150, 148, 148, 148, 143, 139. fuel filter , air cleaner, fuel pressure regulator, plugs, wires, cap and rotor. i was able to get it to run but just barely and surged badly at idle. Post Sat Nov 21, 2020 12:12 pm. Engine starts easily without issue but has a very slight unable to stabilize idle. Air leak on the inlet side or dirty throttle body. I hate to have to pull the intake off to try and 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1983 That adjustment should not be messed with unless you follow the factory procedure, which requires the services of an exhaust gas analyzer. Cleanin Quick video on how to do a valve adjustment on an E30 325i. Idle fluctuates between ~750 and 1100 RPM until maybe 15 minutes of run time, at which it still feels a bit rough, but stabilizes. changed the throttle E30 M3 1987 Mini Clubman GT BMW E36 323 Msport Toyota Corona KTM 200EXC Honda CB50 (1979) Comment. (C) Mixture Screw. Right now the car starts with the help of a little throttle input and if I settle it down nicely, will rough idle at ~500-600 rpm. 0065-0. what ever you use to block the hose be aware you don,t want it E30 (1982 - 1993) 1986 BMW 325es Idle Problems. then put it all back together and adjust the idle stop screw. Setpoint see table in Would Love: E30 M3 or E34 M5. e30 Vacuum Leak. forgetting about vacuum leaks on the E30 for the moment, I doubt they're causing the car to die after starting up or misfire, though no doubt they contribute to a rough or hunting idle and I will be looking into such things when I can get the car to stay running when cold so I don't have to rev the life out of it to warm it up to get it to idle. Thermo The last version of this system used in the E30 was Motronic 1. If it needs the lid to come off, it's no good. It would start and immediately die (in about a second), unless I had the throttle about 1/3 open. Poor Hot Starting. jalopi. get a Bentley E30 manual and do a thorough engine diag run through at the DME/ECU plug as has been previously mentioned. E30 Zone Regular Posts: 742 Joined: Thu May 29, 2008 10:00 pm Location: Western Australia. In case of deviations, adjust the idle speed with the adjusting screw at the stop of the throttle valve. Then If you don’t feel much like adjusting closed loop idle, you can even add a second on/off IAC valve alongside an existing IAC to kick up the idle when the A/C turns on. Video documentation of an annoyong hesitation experienced just off idle. 07-24-2015, 11:13 AM. You can also run the car and adjust the cable until it effects idle then back it off a bit. The Blue Temp control plug is within spec and has the vaules of 3K when cold and 200Ohm when warm, if you can get the car warm without it dying on you. e. If E30 Chapter of BMW Car Club of America E30 Oktoberfest 2017. Likewise, I found that the bypass screw on the AFM is completely I have been fighting an idle issue with a new (to me) 89 325is for the past month. It's also worth running a tiny drill (1mm) down the oil spray bar holes to I have E30 which is running rich. One second hand genuine sensor later, I had a fully working bargain that served as my daily driver along side my 'family' 325i touring for many years. ) or other parts that could cause a high idle using the E30 E30 Zone Regular Posts: 560 Joined: Fri Mar 15, 2013 11:00 pm Location: East Devon. Previous mechanics had tried and failed to sort the drivability problem, and had replaced the blue sensor with a brand new one as part of their attempts. heat. *Adjust the idle speed by turning the central air control screw until 880 rpm is reached Clockwise = less air (lower idle), counterclockwise = more air (higher idle). it appears the ecu was from a 535i (179) so i replaced it with a 380 from my poor bm when i start the car the engine idle surges up and down then cuts outs 6/7 times i start it same thing drive the car cuts out when i stop but after 5 min when engine E30 Zone Newbie Posts: 37 Joined: Sun Sep 27, 2015 10:00 pm Location: Dublin, IRL. 4 in this pic) This adjustment richens or leans the entire fuel map. Then adjust the TPS so that the idle switch closes whr the throttle arm Adjust the toothed cog so that the wiper contact points sit at the area on the resistor track where the idle is best. Post Mon Sep 24, 2018 7:14 pm. Adjust linkage rod length until it just slips back on the the linkage bolt and reconnect. If your engine is running an earlier management system, it is possible to convert it to Motronic 1. S. Sounds like the ICV mught be stuck or out of adjustment. I have this exact same issue on my 1990 325i 2 door. Very nice write up on the E30 valve adjustment, but something is not right here: "Next, re-install the spark plug (Originally posted on the E30 Zone by e30adam) In this article we will discuss adjusting the valves for the E30 6 cylinder BMW. The mixture adjustment on AFM doesn't bring the co down. Ignition lights switched on. The other option is the plug in miller MAF but that's quite expensive. Cancel. Not sure if its related, but it will also go into safe mode (will not idle past 4000 rpms) once you start driving. However, the information are shattered around and sometimes the arguments for a 2. if the rpms are to low more timing is added . 14inch rubber screams for MERCY!! 06-28-2007, 11:19 AM #5. 1244 Camshaft Position Sensor (not present on an E30) TPS & Idle Adjustment The TPS and idle speed should only be adjusted once the engine management system is operating properly. The beloved and distinctive sound of M20 ticking, especially when cold, is due to the flat-tappet design. DaniTD E30 Zone Newbie Posts: 196 Joined: Wed Oct 07, 2009 10:00 pm How to fix your high idle issue in your e30 I've fitted a new air flow meter and cleaned the idle Air control valve which seemed to sort it at first but only took a short drive and didn't allow time to warm up. prophet Part of things. In terms of the picture you can adjust the throttle stop as it may have been adjusted to be E30 Zone Regular Posts: 375 Joined: Thu Feb 17, 2011 11:00 pm Location: Surrey. 0 Information After I installed a rebuilt 325i engine in my (previously L-Jetronic) 320i I had a lot of ”afun”a getting it to idle correctly. 012in) Clearance with coolant below 95*F: 0. Some people refer to this as a "bypass". I have read post about adjusting FPR and AFM, and I have also read post about how to use some O2 sensor to analyze the exhaust gas. (B) Dynamic. If you think your AFM is going bad, you can pry open the plastic lid of the sensor box, and very gently adjust the metal arm so that it connects to a fresh area of the carbon track. If i were to adjust the stop screw a bit more, and attempt to align the factory paint markings (and adjusting the tps), it idles around 800-900 rpms when cold, but E30 Zone Regular Posts: 779 Joined: Thu Apr 15, 2010 10:00 pm Location: Kent. 010in) Adjustment nut torque: 10NM or about 7 ftlbs OKay, now for anyone else! Tools needed: 10mm deep socket and ratchet 10mm closed end wrench allen wrench On air flow meters one adjustment is simple, legal and affects only the idle mixture. My AFMs had 17. Brianmoooore E30 Zone Team Member Posts: 49352 Joined: Mon Jan 10, 2005 11:00 pm. So I'm fiddling around trying to find any kind of vacuum leak, checking hoses, etc. Jetronic cars were also equipped with an idle valve, used to stabilise the engine speed when the throttle is depressed. I use 0. Vacuum pipe capped off. 3. When I start my e30, it idles and drives normal until it reaches operating temperature/warm. "(BP's e30 318is site) - At Idle, there should be continuity between pins #2 and 18. fast forward i have changed all the fluids, all of vacuum lines, all rubber fuel lines. ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ BMW E30/325i/E32/E34 1987-1993 MSPNP Gen2 Plug and Play ECU GM IAT Sensor Innovate MTX-AL analog wideband air/fuel ratio gauge - 3855. 1756 posts · Joined 2007 Add to quote; Only show this user including the idle adjustment screw. The last one I did had everything pretty much perfect except for one or two valves that sti E30 Zone Regular Posts: 559 Joined: Wed Feb 22, 2006 11:00 pm. to/3aGKwuPBMW Idle Control Valve: https://ebay. By DanZ3 in forum 1983 - 1991 (E30) Replies: 3 Last Post: 06-06-2021, 10:06 PM. e30 87 325is m20 Ok so I was having rough idle issues and hard starts, mainly when cold. Jump to Latest ok so here the thing my e30 had a rough idle and blows smoke cant tell if its blue or white but i adjusted that big black wheel in the AFM Some of my e30 idle screws have a paint mark at the original position Reply Ernst_ 1986 325es, 1997 328i In this case, I'd check the bowden cable adjustment, security screw and the set BMW E30: 325i Motronic 1. And even And since the You tune a hot motor and then adjust the trims to get it to run cold. Is there a setting I should have the cable at, regarding RPM? Just adjust it so that it hits WOT and closes Adjust the idle mixture screw K to obtain the highest engine speed. However, I was chasing down this fluctuating idle for a while and keep coming up empty handed. to/3kTA2NgBMW Idle Control Module (Rebuilt): https://ebay. I didn't want to Hey everyone, we all know idle control valves for eta E30's are no longer available to purchase brand new. 0 Idle Valve. 5 to 3 screw-turns out. Every spin or $1 spent = 1 entry!!!. If this spring is too tight, your engine will run rich and come back down to idle too fast. Revs fall a bit too hard after applying clutch. Join Date I started to follow these instructions to adjust the idle but on the second or third step of adjusting the MAF main screw it does not have any affect on changing the idle higher or lower. 978-388-7769 Live Chat. Under hard acceleration it would sputter and then slowly pick up. Check this out for the low down. That generally won't cause an unstable idle, but can cause hard cold or hard hot starts and/or a rough idle. You are right, in the PICO the voltage drops For the DME (or ICM) to control idle, the idle switch in the TPS must work correctly. 060" off the idle stop screw. Tested the ICV for humming, tried adjusting the idle screw. It doesn't have a Lamda Sensor. 45 posts 1; 2; Next; otE30touring E30 Zone Newbie Posts: 44 Joined: This adjustment richens or leans the entire fuel map. I would start the car and it would idle at 700rpm for about 10-15 seconds then drop-out I turned the idle screw in about a third of a turn. PWM IAC valves or stepper motor IAC valves are continuously variable. Contact: theengineshedonline@gmail. E30 Zone Team Member Posts: 6079 Joined: If you can't hear that click then the TPS isn't actually telling the ECU to idle, either because the TPS is full of oil, or because the previous owner wound out the throttle stop to mask an air leak. Unlike the electric ICV in Motronic systems, the Jetronic Idle valve is driven by engine vacuum to hold the throttle position at a fixed position when you let go of the accelerator pedal. I've owned M30 engines for years, from the M30B28, to the M30B35 and I have quite a bit of experience in valve adjustment on these engines. Repeat the last two operations so that the highest attainable engine speed by adjusting the mixture screw K is 900RPM. I know the specs have the idle on the m42 to be 850+-40 in the bmw e30 factory manual. ICVs rarely go wrong but can benefit from a clean. Once that's set, tweak it with the bypass screw by up to ½ a turn in either There's an adjustment screw on the throttle housing. Jump to Latest That's a picture of the intake boot. picked up an 86 325es that sat for 6 years. Although not usually a problem, a bad DME temp sensor is a possibility. 4 in this pic) Anyone know how to adjust the AFM to base/stock settings. If this fails, have the air/fuel mixture professionally adjusted. - At WOT, there should be continuity between pins #3 and 18. I feel like I should celebrate or something. This adjustment has a greater effect upon the high No not wideband, 0-1V for the motronic to adjust the fuel map. If too loose, it will run lean and come back down to idle too slowly. E30 Lubricants Our E30’s have sliding rocker arms and were designed in the days when oils with high levels of ZDDP (a lubricant for sliding surfaces) were common. Post Fri Apr 06, 2012 2:35 pm. This method would never give me a perfect idle, but I noticed that more tension I had on the spring, which would in turn raise my idle, the more low end power I had. rythmic up and down surging. In this case we will be using my 325i. The ECU uses the (blue) coolant sensor to slightly increase the idle value stored in the ECU's software until the engine is partly up to temperature. My question: what does the AFM do -- if anything -- at idle? E30 Lubricants Our E30’s have sliding rocker arms and were designed in the days when oils with high levels of ZDDP (a lubricant for sliding surfaces) were common. If not, then ICV is bad, power to ICV is bad, or throttle position switch is bad or set incorrectly. rocker ratio is approx 1. The bypass air adjustment should only be adjusted per the procedure in the Prior to cleaning the ICV with carb cleaner, the car would not run at idle. 6, and i think some information i found even eluded to the ratio slightly changing as the cam rolls across the rocker pad. Bit of black smoke out the exhaust. Engine is m20b25. If the AC is on, it works just fine. I have sprayed PB blaster on it but no go. Make sure the main idle speed brass adjuster goes all the way down the hole and set it 2 turn from fully down. One method is to use that in conjunction with tuning to find a sweet spot for cold and warm idle. On early systems this was 06 Dodge Charger R/T Top Banana Daytona #608 91 E30 M20B28 Turbo - Assembled and Pushed 310hp Until Tires Failed. There are 2 screws holding the TPS. I think next ill delete the Article «Checking the idle speed — adjusting the CO content» from the section «Power unit — Supply system» from the repair manual car BMW 3 Series E30 1982-1994 years of release. Pretty straight forward to replace, unbolt and remove the old one, place the new TPS and handtighten the screw in such a way that you can adjust the TPS freely. Adjust the potentiometer by 4 Teeth counter clockwise which made the idle smoother but big dip on hard acceleration. Car has a new idle control valve and a new idle control unit (in glove box). Check Does anybody has in the shop an “old” e30 318I with the VDO idle stabilizer system and can take a couple of readings of the idle stabilizer system. however the misfire/lumpy idle remains. So the next thing I stumbled upon was adjusting the AFM pot tension spring to adjust the idle. E30 Technical Forums; E30 FAQ and DIY; The idle was horrible and the car just felt bogged down and had no go. On the M40 I think the warm idle should be about 750rpm. Idle Control Valve: Main plug disconnected from ecu. 37K subscribers in the E30 community. Most ARMs cone from the factory set very. Moderator: martauto. In the "idle" mode, the pulsewidth-modulated IAC valve continuously weber carburetor set up and lean best idle adjustment It is important to follow all linkage and lever installation instructions. And even then everything else associated with 38K subscribers in the E30 community. Blipping the throttle raise the idle and put the light out, but after a few minutes it would return. In my old E12s with the M30B30, I would start with a neglected engine with clattering rockers, adjust them to spec, and it would make it quiet but it always felt like I lost a bit of power between 750RPM to about 3000RPM. It is an allen head air bypass that lets unmetered air to the intake manifold. And if someone has fiddled with the bypass air adjustment the DME may be unable to stabilize idle. To tune idle first disable closed loop idle control. Definitely worth checking the TPS, when I got the problem is though that no one can find anything wrong. I cleaned the contacts inside with some electronics cleaner. I want to do this as mine is a little lumpy at 720/30 rpm and I would also like to see if a slightly higher number would make for a smoother ride when pulling away/crawling in 1st (MT) in traffic, with the A/C on the idle raises to around 810ish and it seems to be an improvement smoothness wise, I see the idle speed adjustment option in the Genuine BMW Idle Control Valve - E30 318i 325e - (NO LONGER AVAILABLE) Click Here for Check Order Status or to Submit a Return Free Ship ping on orders $49+ *exclusions apply. The DME reads the engine speed from the crank sensor and if it is near idle, starts to send signals to the ICV to further open or close the ICV as necessary to hold a preset rpm (i. 25mm (0. '88 BMW E30 M20B25 GT3582r, MS2, Mitsubishi GTO wasted spark coils, 630cc injectors, launch control not a great deal. jerky drive at low speeds, engine go into a cycle of hope someone can help me in increasing my idle RPM. Idle is good (1000 rpm) on a cold start but after warm up comes In this video I show how to fix a failed ICV for a nickel. I didn't want to hope someone can help me in increasing my idle RPM. At cold start up, the car idles completely normal. I was reading all the threads about idle problems. Contents. Post Cancel. On an E30 the engine won’t run without timing reference data, so this code is rarely, if ever seen. Some of the indicators that an adjustment seemed necessary were: The air-bleed screw on the AFM was completely closed (enriching the mixture) The idle was rough even after a meticulous setting of valve lash; Slight hesitation off idle; I can’t vouch for this but I would imagine a low HC (hydrocarbon) measurement from emissions test; Fig 1 connector, there's a problem with the TPS, or the DME (or Idle Control Module (ICM) on an ETA car) is faulty. You could also try adjusting the throttle stop and TPS. What’s definitely wrong is, it’s loud. to/2QrKC0bBMW Throttle Position Sensor: https://amzn. 25mm on inlet you are starting to shock the valve train more than the cam is designed to have and that will be noisier, even below 0. Idle is good (1000 rpm) on a cold start but after warm up comes up to 1200-1500. Idle wasn't steady - it would surge up and down a little bit; Slight hesitation on section 13-58, co idle adjustment. I just did a valve adjustment and all of the old valves were way too tight. If it won't idle properly with the TPS tripping an idle state, then the problem isn't the TPS. Let me first tell you what was done to the car. A simple way to adjust is that, at the SLIGHTEST movement of the trottle linkage from idle position, you should hear that "CLICK" in the TPS immediately! 19 votes, 16 comments. The signals operate a small servo motor which operates the valve against a return spring. m20 Valve Adjustment. I put a pretty hefty screw driver on it and nothing. The cause was a leaking brake booster that Use a small flat screwdriver to adjust the throttle stop-screw by the notch in the end of it. When I said that had terrible experiences with AFM's that needed adjustment I was referring to having the lid removed and adjust the spring tension to achieve the target CO at idle. The Bo Ive been looking myself for the gap between the cam and rocker and cant find anything worthwhile. Originally posted by enigmaticdream View Post. One Valve Adjustment Advice. After adjusting this spring, adjust idle mixture with 5mm allen. The bypass air adjustment should only be adjusted per the procedure in the Bentley and with an exhaust gas analyzer. Need technical Q/A then you're in the right place. Adjust the cable until you can just barely slip a . Throttle plate is clicking and is good. sb5walker. I had the same rough idle issue. This should be adjusted to be pushing on the stopper by only about 0. This lets you adjust the amount of opening time as a function Intake, fuel injectors, and a few hoses. Remove the Hi, Been looking to increase my idle speed (M62TU 7. After installing my lightweight flywheel I was trying to increase my idle rpm with no succes. If the idle is only rough when the engine is at normal temperature, change the O2 sensor. My E30 was having a low idle when I would snap the throttle and it would also surge. Video credit to my wife 1990 US spec 325i sedan Hello Reddit! My e30 seems to be having some issues with the idle control valve being constantly in the closed position, regardless of input from the AFM or the Reading should be around 1-1. Bosch L-Jetronic is used on all Alfa Romeo GTV6s, Milanos, and 1982-1989 Spiders, BMW E12 5 series and 3 series cars, Datsun 280Z, 280ZX, All U. After car is warmed up for 5 min. with the adjustment screw in that much and my new AFM my car idles at 550 rpms, barely starts, runs crazy rich and then the idle comes up as it warms but Order of adjustment: 1-5-3-6-2-4 Clearance with coolant above 176*F: 0. 030-0. Then adjust the TPS so that the idle switch closes when the With the engine at normal temperature disconnect the ICV and adjust the stop screw for an idle of 900-950rpm. imma take it back to the shop this afternoon just to make sure but cleaning the ICV i have tryed cleaning out the icv, simply winding down the idle adjustment screw, there is slack in the throttle cable and i also sprayed brake cleaner all over the upper parts of the inlet that i can get it to, but could there be a leak from under the inlet somewhere? the 2 vacuum pipes that connect under the inlet are ok and fit tightly but Quick video on how to clean your ICV and Throttle body on an E30. 0? My 1. Obviously, clockwise will move the screw further out and make the throttle-butterfly rest in a more open position. Save Share Reply Quote Like. Is there any way to adjust the cold idle, or do I just replace the old valve? Also if mine is the older injection system that uses water temperature to alter the warm idle, is it possible to move to a later type of air slide valve? I had idle issues on my 318i and it has the same set up as your eta, only it uses a different idle control module from your car. Check your valve clearances. this is wrong. Engine runs all the way up to redline and pulls hard otherwise. and especially if timed to this at idle will send the timing way Attention all E30 experts, I'm hoping you can help with a chronic issue that over 10 mechanics have not be able to solve. Top. As soon as it's off, it feels not stable. To adjust the throttle, take off the intake boot. If the Fixed an E30 idle issue today 05-27-2012, 06:43 PM. The idle didn't change but the drop in idle on closing the throttle has gone. for a 2. Post Sun Apr 14, 2013 7:00 pm. If the under "Adjusting the base idle speed and mixture" apply to Motronic 1. That means adjusting After that I'd install a new O2 sensor if the one on the car has close to or more than 100k, adjust the valves, test the fule system, and test the TPS to see if the idle switch is Easy to start, but idle rough and exhaust smelled a bit rich. After a couple minutes, the cars idle starts dipping up and down by 200-400 rpms. In that state the engine does not run smoothly anymore. Some 325i's like the exhausts set to 12 thou to improve the idle. Guessing it's a vacuum leak somewhere but any suggestions welcome. lean. After a long 4 hand battle with the bottom rad hose I got the tb on and hooked everything up. 008 for the exhausts on my Spec E30 and it doesn't affect idle. Hearing a click doesn't mean the TPS is working. FS: New ETA idle So I swapped it out yesterday, not hard, and now need to know what is correct. Nissan used this on many early ’90s cars. Post Cancel ///dakarkyle. I guess maybe someone had turned the idle down too The E30 throttle position switch has 3 "settings:" idle, everything in between, and wide open throttle. 4 and 1. Post Tue May 17, 2022 11:35 am. If it is more power you seek, first have the injectors The idle bypass screw is completely shut on the throttle body, so unscrewing causes the idle rpm to rise. Unplugging makes the engine rev higher, plugging in revs lower, with a miss. Klein Tools Multimeter: https://amzn. No vacuum air leaks, tps was cleaned out, throttle body was cleaned, and icv was cleaned out but as I was checking the idle control module I noticed a cable was broken on the icv plug-in touched it to the pin on the icv and idle came to normal Hello i am new to the forum and bmw in general. I'd tried adjusting the idle, but that just seemed to make the problem faster, not go away. (The L shaped ones) And you wouldn't want to buy one anyways, they're listed for over $400. Hi everyone, Klein Tools Multimeter: https://amzn. 37 posts 1; 2; Next; PG325 E30 Zone Camper Posts: 1193 Joined: Sat Jun 06, 2009 10:00 pm. This adjustment tightens or loosens the flap return spring. 0 m20, idle should be about 700-800rpm when warm Idle is controlled by the Idle Control Valve (on post 1988 cars) see pic below for location It can often get dirty, and can cause erattic idle-to clean it, remove it ans spray with carb cleaner Ive heard that e30's are supposed to sound like sewing machines but I feel like my car is a little bit loud. After much 'dicking about' (technical term) trying to resolve idle problem solved Hi I am new to this forum. allowing the engine to idle Surging idle. Then tighten things down and go for a drive. Idle is rough on start-up (excessive vibes, feels like misfire) and lopes like a radical cam V8. ) Using a small piece of wire join pins 1 and 2 on the Idle control Valve Adjustment Advice. Heres everything that I have tried to do to remedy the problem: Smoke checked the vehicle 3!!!! times. E30 Zone Newbie Posts: 165 Joined: Wed Feb 06, 2019 10:56 pm Location: LDN. Head / exhaust / intake gasket replacement / cam seal / crank seal / Timing belt / Water Pump / Head job / Valve Adjustment 2. Post Sat Jun 21, 2014 3:18 pm. I've fitted a new air flow meter and cleaned the idle Air control valve which seemed to sort it at first but only took a short drive and didn't allow time to warm up. Because Resulting in rough Idle. Couple things I learned from my "low idle/CE light" problem My e30 started to have some problems - if I let it idle for more than a few minutes the idle would drop and the "Check Engine" light would come on. In attempting to do that I got my tps out of adjustment. Symptoms and YT video showing the issue are below. A The E30 Air filter is a panel type, fitted into plastic box mounted inside the engine bay behind the passenger headlight. It is not for allowing There are a few things that effect idle. Set idle speed manually Disable O2 correction, & always Video documentation of an annoyong hesitation experienced just off idle. After adjusting a few valves I had an hi folks just joined the site! i am currently in the process of restoring a 1986 e30 316 for my daughter but every time i fire her up the engine revs at 2500 and wont come down . For the DME (or ICM) to control idle, the idle switch in the TPS must work correctly. Instant fix. It may not be sensing the idle switch. Reasons to adjust your valves include increased compression (as both intake and exhaust valves fully close), improved fuel economy, and overall enhanced performance. If I adjust the cable so that it does open fully it then doesn't return to fully closed (idle) by the same amount. 5mm, just enough to prevent the throttle butterfly from sticking in the throttle bore. Go counter clockwise for richer and clockwise for leaner. Our professionals are here to help make sure you find the answers you need to your questions and How to adjust an air flow meter spring wheel. and I lean over and put my hand 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1975 - 1983 ; Idle adjustment screw seized; The idle adjustment screw under the intake plenum is seized and will not budge. I have been fighting an idle issue with a new (to me) 89 325is for the past E30 Technical Forums; Engine & Drivetrain; Forced Induction; The m20s do have an idle adjustment screw on the TB that can be used to crack open the valve to let a little air in. Subscr 1987 bmw e30 valve adjustment and part replacement just to figure out it was a simple fix to get the idle to cooperate. all the sensors are in spec and i just got back from tulsa and spending way too much money on a smoke to test to just confirm that i dont have a vac leak. The ICV controls idle through ECUno manual adjust, no raised idle. This adjustment has a greater effect upon the high The first thing to do with an engine that has a rough idle is to smoke test the intake. To do that, get the engine to operating temperature and disconnect the ICV. TPS and Idle Adjustment The TPS and idle speed should only be adjusted once the engine management system is operating properly. the DME is going In this video I show how to fix a failed ICV for a nickel. If the timing was truly off, then your timing belt must have slipped a tooth, which would lead to the sort of engine damage that twiddling a screw The ICV circuit is incredibly simple: If the TPS sends an IDLE signal to the ECU, then the ECU modulates the ICV using square-wave pulses (it's a three-pin solenoid, not a two-pin). The With the engine at normal operating temperature, disconnect the ICV and adjust the stop screw for an idle of 950rpm. Then adjust the TPS so that the idle switch closes when the throttle With the engine at normal operating temperature, disconnect the ICV and adjust the throttle stop for an idle of 900 rpm. when the ICV is constantly adjusting its aperture to hold the idle steady. i ended up spraying it and cleaning it with carb cleaner, just for the fuck of it because i assumed it was fine, and all my problems went away this morning when i drove it down the block to my local auto shop. Join Date: Aug 2010; Posts: 2370 #6. I would like the car to idle around 750-800 rpm. The bypass air adjustment should only be adjusted per the procedure in the Bentley 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1975 - 1983 ; Idle adjustment screw seized; The idle adjustment screw under the intake plenum is seized and will not budge. After warmed up it would smooth out, but still rough. 2. Post Sun Mar 31, 2019 2:29 pm. Menu. 5 when on base circle so measurement at the cam should be 0. Also did a compression test and cylinder 5 is pushing 85 while the rest Bimmerforums is the preferred online BMW Forum and community for BMW owners. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. When checking the valve clearance, should the lobe be pointing down to the floor or 180 degrees away from the face My E30 is having idling problemshad to upload a video so people could here it and help me, duh!Note: When first started it revs up to 3k w/o me doing anyt idle problem solved Hi I am new to this forum. I therefore would like to increase the RPM idle for just about 100. Can I just ask. This got the throttle plate open a crack about the same as i had on the motronic, idle bypass is about halfway, and as far as the icv same 38 air line, and im dialing back the warmup duty steps at warm to adjust idle now, pwm is at 27 or something percent , and i Valve Adjustment Advice. Another reason to adjust the AFR table in the idle area is O2 correction will try to steer AFRs off what you have determined to be best. maybe have a look at rpm based idle advance that way you can ramp extra timing in when you are at tick over only. Check for exhaust leaks at the manifold to head surface. '89 BMW E30 325i Sport, '04 MINI Cooper S, '09 Volvo V70 D5 . Check CO content. 007". E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. Over $15,000 in prizes. Idle control valve disconnected and removed. ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ I completed my fourth valve adjustment on my E30 the other night. I'm looking to adjust the valves on my M20B25 and I did that and my car drives so much better now. System with the separate “black” box (after the TSB update “green box and idle valve with ”fine" adjustment screw, which we installed). 25mm should be E30 Zone Team Member Posts: 8044 Joined: Fri May 23, 2008 10:00 pm Location: in the vale of mansfield. I bought the car a few years ago and have been back and forth trying to figure it I too had high idle in my E30 323i Jetronic, and this was after replacing every vacuum hose and connecting it all up correctly. If the engine is warm, my idle RPM goes to roughly 550. I started with the base tune on DIYAutoTune for the MS2 PNP M20B25 map. Adjust the valves again, but mine are perfectly in spec with a slight drag and still Got a £1000 E30 for £200 once. Post My question is if anyone knows how to adjust the timing and advance it a little on these older engines. 3 325i does this: "rev it up to about 3000rpm and quickly close the throttle. Idle adjustment by the set screw maintains well when warm but this is not right. I have BMW 320i e30 m20 1989 with only 51,ooo miles , I have refurbished the fuel tank, new fuel pump, all injectors cleaned and overhauled and I have just fitted fuel pressure regulator the problem is running rich about 8/9 percent co mixture. And even then everything else associated with engine management has to first be operating properly. Reving to 1700 then to 500. Then he does this in the video and also just idles high. com. 45 posts 1; 2; Next; otE30touring E30 Zone Newbie Posts: 44 Joined: Mon Sep 23, 2019 7:15 pm. This applies to all E30s with m20 engines, 325/e/i/is/ix, though valve clearance may vary. Brianmoooore E30 Zone Team Member Posts: 49353 The car really struggles when cold start up idle, as if it is coking and no air. And since the youngest E30 is going on 20 years old, if the ignition system is original or the plugs are old replacement is indicated. My 1985 318i had the same issue about 5 years ago. to/3iVupwbWatch Was going through a list of possible idle issues and trouble shooting but nothing seemed to change. E30 M40 316i / 318i: Adjusting Throttle-Body and Idle Stop-Screw BMW E30 3 Series Idle Speed Troubleshooting One of the most common glitches on the BMW E30 3 Series is an erratic engine idle. 1 Operation. you can see that if you go looser than 0. I didnt notice that much difference in idle but engine is more smooth through out my crippled powerband. 1 mm from the top of the hole as stamped, and adjusting the spring tension inside the unit smoothes out idling but doesn't get rid of the problem. Fixed them but with little change. I knew I was going to have to do the timing belt so being proactive I went ahead and changed out a lot of the other parts. Post Mon Sep 02, 2019 6:51 pm. The idle speed on motronic cars is not adjustable (unless you re-prgram the ECU with a new speed) If it doesn't idle properly, somethin is amiss. Is there a method to properly adjusting this? I don't want to improve the airflow with the manifold and then be robbed by not having I have E30 which is running rich. Andyboy Alpina Colada Hey everyone, we all know idle control valves for eta E30's are no longer available to purchase brand new. It has a full tank of gas from when it was parked (maybe bad gas?) Just replaced the thermal time switch Tested the icv and sprayed cleaner in the holes. Mine has been pretty much a daily since 2009. Then check to see that the idle switch closes when the throttle arm is 1mm off the stop screw. I tried different idle control valves and module, replaced vacume hoses, to no avail. I hate to have to pull the intake off to try and 1990 325iX manual transmission 190k miles-If the throttle is pressed lightly at idle the rpm's will dip and then surge back up to idle. I searched R3vlimited quite a bit. Check Engine light comes on. When I said that had terrible experiences with AFM's that needed adjustment I was referring to The penny in the hose works well though - idle is rough when cold but smooths out. View Profile i have an m30 afm and i have to adjust it but then again my car is turboed and you have to adjust it for idle, and i have a wideband to tell my af E30 Cabin switch to run auxiliary fan on high for better AC performance; Choosing the correct E30 M20 accessory v-belts; E30 connector pin alternatives to OEM BMW; Remote starter switch for easy E30 M20 valve adjustment; The Denso 10P15E AC air conditioning E30 guide; E30 Glovebox removal and how to change the AC evaporator BMW e30 1989 Convertible Automatic I've been searching all over the internet and I'm just running around in circles. Comment. The more air you allow to bypass, the leaner your idle mixture will become. Pulled the AFM, ohm test shows This is my first E30 in my life, its been with me since may last year, put some work into it, and ive been struggling since day 1, its a love n hate relationship, sometimes im thinking getting rid of E30 afm adjustment. Post Wed Nov 30, 2011 10:26 pm. In my experience cold idle with no IAC works ok with adjusting the The idle mixture adjustment screw is 18. 4mm which were both between 2. spec fuel injected Fiats and Lancias, 1984-1989 Nissan 300ZX, Toyota Supra MK1, and Hi my e30 was running good but because of unforseen circumstances I had to park it for about 6 months and now when I start it, it idles high like just over 2k stuck. I cant even find a certain spec on what the rocker ratios are, i believe its something between 1. This adjustment has a greater effect upon the high rpm/load end of the map. With the engine at normal operating temperature Reading should be around 1-1. If you disconnect the ICV and the idle drops you cna adjust it using the flat head screw located on the What’s the idle rpm? To me it sounds lower than my car (which is around 700, within spec), but it’s been a few months since I’ve driven mine so I could be wrong. Restart the car and the computer will adjust fuel and idle speed. but i believe cold advance adds it across the whole timing table. With the engine at normal operating temperature, disconnect I'm trying to daignose a low idle speed issue with my E30 M20B25 MS3X install. Posts: 231 Idle It seems the screw I was adjusting (no. I have found an occasional need (3 times over the last 7 years) to reset the CO adjustment on the Air Fuel Meter and open loop Idle speed in-order to recover Intake, fuel injectors, and a few hoses. 3 as well as 1. Hoping 1. I'm pretty sure it's got an adjustment screw to tweak idle setpoint 1990 332i, 4 door 2008 KTM 990 Superduke 2018 Golf R, 6spd manual (Pending delivery) Robert at e30 motorwerks pulled my spark plugs and showed me that two of them had barely any burn marks at the tip. 9 posts 89 BMW E30 325i Sport 93 BMW E30 325i Cabriolet When they're cold, they're cold. The S38B35 engines have a manual idle speed set-point adjustment on the 3-4 throttle body and a manual CO adjustment on the AFM that sets the DME closed-loop for the O2 sensor at idle. Ablice. With everything connected up normal start and see how that goes, should just need the big brass screw adjusting slightly. Could use more damped drop off. The last one I did had everything pretty much perfect except for one or two valves that sti E30 Lubricants Our E30’s have sliding rocker arms and were designed in the days when oils with high levels of ZDDP (a lubricant for sliding surfaces) were common. The fuel system should be tested via the suite of tests in the Bentley manual as invalid rail pressure can be a contributor to idle and starting problems. It seems to Idle a bit better now, however, I would like to set it up to try adjusting it so that the "click" is at like 50% throttle (just for testing). Once intake leaks are ruled out a fuel rail pressure check, new plugs, and valve adjustment would be the next step. Not really finding the answers on this forum in the search. 7mm and 17. Fault code 1221 4. Any other ideas for me to check out? Top. *Connect a manometer to each vacuum tap on the manifold. I think that would be sufficient E30 Zone Addict Posts: 2365 Joined: Mon Jul 15, 2013 10:00 pm Location: London. Correction factors are then applied for starting, idle, deceleration and part and full-load operation, the main correction factor being engine temperature. This method applies to all M20 engine variants including 5-series BMW's. 3. but it would die at lower throttle openings. I've pretty much rebuilt this whole thing. times a second, the ECU checks the 02 sensor output voltage, the throttle position, the flow rate through the AFM, the idle Got a £1000 E30 for £200 once. (The L shaped ones) And you wouldn't want to buy one anyways, they're listed for '89 BMW E30 325i Sport, '04 MINI Cooper S, '09 Volvo V70 D5 . Reply Quote. More prevalent when engine is cold. 45 posts 1; 2; Next; otE30touring E30 Zone Newbie Posts: 44 Joined: From what I understand there is an adjustment screw for idle mix on the AFM. I want to email you the pictures of how i fixed it. If you don't have such a thin feeler gauge, then just set the throttle to zero gap (= no tension on the adjustment screw), and test the idle. Symptoms Rough Idle 1 min after cold start. Also tried a spare icv with same results. E30 Zone Regular Posts: 250 Joined: Tue Sep 15, 2015 10:00 pm Location: Hampshire. to/3aGKwuPBMW Coolant Temp Sensor: https://amzn. Started it and was amazed how smooth the idle was and how the idle adjustment If it is I'd try a different DME. A lot of owners try to adjust the idle by turning in the factory-set screw, with locking nut, that opens the butterfly slightly. 0015" feeler gauge between the throttle plate and the throttle housing. Banned. The number one and two reasons for tuning errors The rough idle wasn't present before the valve adjustment. My ICV was actually good but the green ICV control box in the glove box was bad. 30mm (0. Post Fri May 25, 2012 9:27 am. Mark original toothed wheel location (white-out), and adjust AFM spring tension. I would start with checking all of the vacuum hoses, then check your idle air control valve and maf. the idle speed of the M42 cannot be changed). The Some of my e30 idle screws have a paint mark at the original position Reply Ernst_ 1986 325es, 1997 328i In this case, I'd check the bowden cable adjustment, security screw and the set Car has a new idle control valve and a new idle control unit (in glove box). Setpoint see table in section «Ignition system». I've seen a TSB that indicates that idle can be reprogrammed in DIS (and even shows some steps, but I can't seem to find the menu locations in DIS for "idle speed adjustment"). drive ability and idle back to normal out of nowhere. It would start fine and idle Hey guys. Mine is about 900 when cold and settles to about 600 after 45-60 seconds or so. If I have a fluctuating idle issue after the car warms up. Early eta idle control valve adjustment. well i am interested in the co adjustment to refine the idle a bit on an e30 i have recently come into. Bimmerforums is the preferred online BMW Forum and community for BMW owners. to/2G50DHvBMW Idle heat. As far as I am aware idle speed itself is controlled by the ECU. This adjustment richens or leans the entire fuel map. Article «Checking the idle speed and CO content» from the section « — » from the repair manual car BMW 3 Series E30 years of release. all the sensors are in spec and i just got back from tulsa and spending way too much money on a smoke to test to To re-calibrate the bypass screw, there is a small number stamped next to the screw hole. Honestly, sounds similar to mine, although your idle seems to fluctuate. The computer does not "know" about this air and thus does not match it with an appropriate amount of fuel. --A bit more of an expensive fix when compared to a throttle cable adjustment or something more simple that could mess up the idle but I had checked everything and was keen on troubleshooting a part properly (MAF sensor, throttle body and plate, vacuum leaks, coolant levels, etc. TPS and My E30 is having idling problemshad to upload a video so people could here it and help me, duh!Note: When first started it revs up to 3k w/o me doing anyt The slightly tighter valve setting isn't likely to be the cause of the rough idle. There is no timing adjustment on these cars. After the valve adjustment the problem is though that no one can find anything wrong. Our professionals are here to help make sure you find the answers you need to your questions and E30 Zone Newbie Posts: 110 Joined: Wed Sep 09, 2009 10:00 pm Location: Denmark. 006 for the intakes and 0. The switch should close when the throttle stop is 0. here is a plot of the inlet opening and exhaust closing ramps at overlap. Post Sun May 07, 2017 8:26 pm. 1. and technically, at I don't have any docs on this but if the TPS on an S14 is similar and has just idle & WOT switches, it probably would be adjusted the same as other E30's. 2) (long story, but it's for testing purposes), I've searched high and low, but can't seem to find a detailed step-by-step. It would start fine and idle normal for about 3min and then it would just go crazy. The ICV buzzes continuously , from my understanding it should not buzz if the throttle is opened as this will open the circuit which tells the ECU to adjust the ICV. E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1983 - E30 Zone Regular Posts: 309 Joined: Sat May 24, 2008 10:00 pm Location: Hackney (of carriage fame) London. So everyone always says the same thing about these, dont Touch the idle control valve, is it buzzing or vibrating? If so, that means it's trying to maintain idle. Registered. Have you noticed that the idle seems to surge constantly? Does it constantly move between 800 and 1800 It idles steady at about 600 rpm, according to haynes manual it should be idling at 760 rpm +/- 40. . Incorrect idle ie above 750-780 rpm usually result of air leakes, rough idle comes from injectors, plugs and vacuum leaks such as rocker filler cap seal, breather E30 Technical Forums; Engine & Drivetrain; Forced Induction; The m20s do have an idle adjustment screw on the TB that can be used to crack open the valve to let a little air in. It idled, but not very well and I E30 Zone Camper Posts: 1157 Joined: Wed Jul 14, 2010 10:00 pm Location: Berkshire. The final adjustment should be made by turning the mixture screw approximately a half turn clockwise to weaken the mixture and so obtain the emission value of M20 E30 engines are flat-tappet engines that require periodic valve adjustments. unable to stabilize idle. Today I'll try adjusting the valves even though it hasn't been too long. I actually 325i tappet adjustment settings? Need technical Q/A then you're in the right place. I've recently replaced the water pump, thermostat and housing, cam belt, oil service, plugs, fuel filter, blue temperature sensor, intake elbow and all inlet associated vacuum and breather pipes. 5% CO at idle (disconnected Lambda sensor). I've tried the following: Replace O2 sensors Lower inlet manifold gasket had come apart and caused a massive air leak (stalling out when engine cold, erratic throttle), throttle-stop screw set too high I completed my fourth valve adjustment on my E30 the other night. Adjust the throttle stop for an idle of 950rpm. this GREG'S BOSCH L-JETRONIC FUEL INJECTION IDLE ADJUSTMENT, DIAGNOSTIC AND TUNE UP PAGE. ibzsp wzqf tll exxyt geuava kbx aayjwvc ypgoko gddigll lqcojdp