E30 unplugging icv does nothing. The ICV is responsible for allowing air i.
E30 unplugging icv does nothing Once it's at normal op temp, it idles beautifully. And disconnecting the TPS does nothing to the car while idling or giving it gas. I assume that to be a sign that the 02 sensor isn't giving any signal whatsoever to the ECU. Go to E30 r/E30 . Post Sun Mar 06, 2022 9:24 pm. 04mm (about 1/2 a turn after the stop screw touches the arm), reset the DME/ECU by unplugging it for at least 10 seconds, replugged it and started the car. economy is exactly the same now as it was then. When i disconnect the ICV plug, nothing happens. 7613 posts E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. Guys Our '89 320i Touring is on occasion difficult to start from cold, requiring the use of the throttle to get it going and then a strong smell of petrol for a couple of minutes once going. It stays running no matter what and is draining the battery every night. 7 conversion by Ant, aggressive cam, maf conversion, bbtb and more!) Usually, it would be pretty lumpy at idle, (thanks to the cam), but would be at the normal kind of idle speed, wouldn't stall, etc, and would really take off above 3000/3500 rpm ish! Get app Get the Reddit app Log In Log in to Reddit. ICV left in fully open position = probably too much air getting in hence the hunt. r/E30. Car is a facelift M20B20. Post Mon Jul 14, 2014 5:33 pm. Hey ya'll Its been a whilelong period of happy motoring, but now I've got a strange one. I have what appears to be an air leak as at idle the revs sit where they should be but once warmed up its chugging away rather than a smooth constant idle So far : Cleaned ICV with carb cleaner Replaced Throttle body gasket I did some research and figured my best bet is the idle control valve (ICV). which isn't very good on fuel Unplugging the MAF, car still runs and has the idle surge Unplugging the CPS, car still runs but splutters and still does the idle surge Checked engine with a finetooth comb and there are no vacuum leaks Unplugging the Idle Control Valve, car idles PERFECTLY at 900RPM and DOES NOT surge at all I have scanned the car for codes and nothing comes HELP, last week my idle became very eratic jumping from 800 down to 500 and back on a rhythmic patern. power and max. After doing that, my car developed a surging idle from 700-1500 very rhythmic with no change at all. Take the ICV off and apply 12 volts, should close with voltage applied and be open with no voltage. Hi guys, hopefully someone can point me in the Bimmerforums is the preferred online BMW Forum and community for BMW owners. For the last few years I’ve had an ongoing issue where the engine cranks for a while before starting, I adjusted to 0. I honestly thought that removing the brake master wouldn’t really have an effect on the engine itself and that’s why I thought the issue might be something other that might be even more serious. I’m talking here about an S50 engine which runs great idles terrible, surges, smells rich although the rev counter is steady as a rock. With the ICV off turn ignition on and test with multimeter on positive terminal to ground. New clamps you can get as just plumbing clamps at at a hardware store if you're on a Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. Put a filter on the icv pipe and vent the pipe to the cam cover to atmosphere or a catch can. German-Whips E30 Zone Camper Posts: 1157 Joined: Wed Jul 14, 2010 10:00 pm Location: Berkshire. Post Fri Aug 17, 2007 7:58 pm. Hi I get an occaisonal fault with flat spot on take off - loads of people have reported it, and consensus seems to be Idle Control Valve playing up. Ive swapped out 3 icv and the rough idle happens when car gets warm and unplugging the connector does nothing. Checked that it was really ok (and not a fluke related to a new leak) by returning the throttle to the closed position and adjusting the throttle position sensor, cranking the motor With the engine running, unplugging the throttle switch causes the engine to surge until you plug it back in - and it goes back to jumping back and forth again. E30 Zone Regular Posts: 250 Joined: Tue Sep 15, 2015 10:00 pm Location: Hampshire. Looking for someone to shed some light on a low idle issue I currently have with the 325i With the engine at normal operating temperature, disconnect the ICV and use the idle stop screw for an engine speed of 950rpm. Vehicle behavior: On cold start, it runs pretty dog shit for the first few minutes when it idles with a lot of idle hunting as General E30 related discussions - Please put technical questions in E30 Tech Help forum below. What are the problems with your car? '89 325i Touring | E30 Zone Regular Posts: 456 Joined: Mon Oct 13, 2008 10:00 pm Location: Isle of Man. it does not surge with the heater blower on 3 and 4 settings. Cold starts were (understandably) really hard. On the drive i cant seem to get my idle down to a normal speed, its currently at around 1400rpm 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 Rally_E30. Reason I ask is, the car idles at 1000 rpm or maybe a little higher (per the dash tach) when it's good and warm, but idles at what seems to me a more normal 850 ish when cold/cool. Tested the ICV with a multimeter I inherited a 320i E30 (my first BMW). I also give the throttle body a quick clean. Tested the ICV with a multimeter Test bulb on coil, does it glow = Yes Does the ICV buzz with IGN on = Yes Check power to fuel pump = fuel at injector rail Lead from king pin of coil to spark plug on top of rocker cover: - When ignition key turned to position 2 = Single spark - When trying to start car = no spark Rechecked continuity of wire form pin 1 of coil to pin 1 of ECU plug = good. Need technical Q/A then you're in the right place. Okay so this spring/summer has bought about a new set of gremlins and I’d really appreciate some help with it. Post Thu Dec 29, 2011 9:23 am. as soon as the RPMS spike, the MAF sensor is recieving no power pulling the plug My ICV is almost completely closed with power offthere is a slight gap which on some ICVs is adjustablemine has been factory sealed. ) 13- If it does'nt start , turn the black section of the ICV a few degrees (not too much) to left or right then try again, if no luck go the other way. I cleaned the icv out with carb cleaner. I've also noticed that on a cold morning, it idles at over 1200. The ECU sends varying voltage (I think) to each to control how much it is open, to control the idle rpm, when the Ah, yes, the E30 and the surging idle a tale as old as time. resistance across its contacts is 50 ohms not 10 3. Post Sun Oct 09, 2016 11:20 pm. Post Fri Oct 08, 2010 7:40 pm. IF you have done everything correctly it will start. 12-start the engine( it might take a few attemps to start. 5 has a "loose" idle ( piper fast road cam fitted a many years ago) so I'm used to it but I #'ve recently experienced a E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. It still buzzes like theirs no tomorrow. Also had to make sure all the pipes And clamps leading to it was air tight. I originally planned on threading the inside and then screwing something in. downhiller. so no more problems with my 318 everything is just dandy beside the HG but that can wait. My current issue is that I recently have repaired many things on the car, but now it will not start, this is the order things have E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. That is essentially a free fix. Log In / Sign Up; Advertise on Reddit; Shop E30 Zone Addict Posts: 2403 Joined: Mon Jan 10, 2005 11:00 pm Location: Leicester. not actually a choke per say but it holds the throttle butterfly open a little more when cold so similar in operation to a choke just with the ECU controlling E30 Zone Regular Posts: 309 Joined: Sat May 24, 2008 10:00 pm Location: Hackney (of carriage fame) London. Post Fri Jun 07, 2024 8:33 pm. r/E30 Given that the idle is fine in #4, when the extra injector does not fire and the ICV is meant to be 90% closed, and given #3 where adding it back causes the high idle, either your ICV is not working properly (and probably never will), the throttle idle switch is not working or not set correctly, or the idle ECU is bust. It fires right up every time no issue at all but the idle sounds super clunky and struggles to maintain idle without stalling out although it does on occasion. Post Wed Dec 02, 2015 6:39 pm. Tested ICV per the Bentley manual and the the center pin of the connector (pin 2) was 12 volts as it should be but when I measured the outside pins, pin one measured 9. I will also test the relays tomorrow. Also before the car sputters out the rough idle begins. I thought it must be the ICV so I bought one off ebay, put it on and it does exactly the same. 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. my m20 2. i've never seen a Home Board index E30 Technical, Modifications & Performance E30 Technical Help; Help with fluctuating idle. 2 depending on throttle position. Moderator: martauto. My Tech 1 has had a replacement M20 engine with Motronic 1. replaced that today and now i'm up around 1300 with speratic drops to 800. Tested the ICV with a multimeter CNC ICV Elbow – Fix for ICV elbow vacuum leak E30 M20 engines. Only thing I got now is fixing the hoses, they are in rough shape but I can’t see why they’d be the issue considering it ran like this and they weren’t leaking then. I THINK the ICV is open when unplugged, closed under power. Post Sun Jun 30, 2013 12:56 pm. I took the throttle body off and cleaned it up. Be worth taking it somewhere with a gas E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. The Intake Manifold is specific to the engine, so an M40 manifold will not fit an M10. I cleaned the brown temp sensor but did not replace. I have pulled the plug out of the ICV and it stops hunting and revs higher. Immobiliser could be thing though! Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M42; If this is your first visit, be sure to check out the FAQ by clicking the link above. Haynes is a load of bollocks. So by unplugging it I'm letting in more air (I think!). GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla The resistances on the ICV were down from spec values in the Bentley manual, so replaced that with a new one as well. Top ‘drawn cup’ bearing (OEM is 2 seal) 4. All new gauge temperature sensor (brown plug), new DME NOTHING has changed in the relationship between modern fuels and the AFM! Optimum air/fuel ratio for both max. Nothing really does - cold engine, temp sensor disconnected, temp sensor shorted, O2 sensor disconnectednothing. I’m betting it is that. New plugs didn’t fix. I tried it on my e28 with no luck and same on my eta. Post Mon Sep 28, 2020 10:22 am. You do not have the required E30 Zone Regular Posts: 251 Joined: Wed Dec 19, 2018 8:24 pm Location: Bavaria , Germany. 7 posts • Page 1 of 1. jpg. New. Elbows to hoses going to brake booster – CNC version of this now available also! CNC Throttle Body Booster Side Elbows – Fix for vacuum leak E30 M20 engines. r/E30 A chip A close button. BEERBOY123 E30 Zone Squatter Posts: 1537 Joined: Sat Jun 06, 2009 10:00 pm. Hello all, I am the new owner of a 1987 BMW 325i (Build Month 01/87), with the intent of turning it into a rally car for Stage Rally. Changed intake manifold gaskets, throttle body gasket, valve cover gasket and under valve cover "rubber caps", oil cap, injectors O-rings, O-rings at oil This happened to my m42. This entry was posted on February 2, 2022 at 11:53 pm and is filed under Do it Yourself. Q&A. It wasn't idling vey well and for sure the throttle stop screw was not in its factory position. 5 head was installed. To solve this If it does, ignition off and plug out electrical plug again and this time rotate the valve the opposite direction to again the fully open position. Cold idling is a big problem of my M20. Hello, My ICV is not working: 1. Open menu Open navigation Go to Reddit Home. i don't know what that could have to do with it. I know I need to replace the vacuum hoses, but that's where I'm confused. Controversial. Have you got a bypass DEFINITELY! Take the rocker cover off so that you can see if a valve is stuck open. They say check the resistance of the E30 Zone Newbie Posts: 226 Joined: Thu Aug 25, 2011 10:00 pm Location: Walsall. Putting 12 volts direct onto the ICV I have the same issue where unplugging the ICV has no effect on cold engine idle. So long as the spring is working in the ICV then it probably works. With the ICV connected it idles and continues to get rougher until it eventually stalls, then will fire back up again. Before you could tell the ICV was working because the engine would start to stall out when unplugged, but now upon starting, the engine revs 3k+ and does not drop or attempt to idle. Been through looking for air leaks, smoke tested so ICV (cleaning and two spare parts) - nothing CTS (new one and used one) - nothing AFS (with one from working car) - nothing Another throttle body with adjusted throttle plate to specs with new TPS - still nothing. When done, ignition on, IACV plugged My recent studies reveal this- The mass airflow sensor works fine when initially started. Having checked for intake leaks and cleaned the ICV to no avail, I'm trying to check the resistance of the ICV. Sometimes unplugging the Home Board index E30 Technical, Modifications & Performance E30 Technical Help; testing m42 icv. Although not usually a problem, a bad DME temp sensor is a possibility. To replace just position the ICV close to its final position, connect the hose under the manifold or to the intake boot if you deleted the mess, connect the 90 degree hose, put the bracket back on the stud and tighten. But I don't see one on the S14. If you put 12v on the center then ground one side or the other briefly it drives it open or closed all the way. . However, when I remove the ICV and plug it in the vane inside snaps shut. Post Wed May 15, 2019 5:04 pm. So either my 02 is shot or some how not sending a signal, correct? Top. Every mechanic I took it to said vacuum leak but it wasn’t. Business, Economics, and Finance. 35K subscribers in the E30 community. My 1989 m20b25 is idling low and very unstable for a while when starting cold. Is there a way to test the ICV opens and closes? I just wondering if there are many. Post Sat Aug 30, 2014 2:18 pm. Hope this helps. I read the ICV will rarely fail. Any ideas? Save Share Reply Quote Like. I recently swapped my m20 b20 out for a b25. Only thing left here is the rocker cover gasket. Expand user menu Open settings menu Open settings menu I also read that with the engine running, removing the oil filler cap should make the engine stutter, which it does, albeit slightly. Post Thu Jan 26, 2012 10:23 am. Note the car has been mostly restored prior to last summers 35K subscribers in the E30 community. I have replaced the main relay to no avail. Not saying it will work on yours or not. Good afternoon I've have this nagging doubt that my ICV isn't working as it should or is it something else perhaps. 7 stroker (rebuilt hartge h27 lump), recently had a problem were when i started the engine the revs would go straight to Hi everyone, I’m struggling with a low idle on an E30 with an m20. i took out and cleaned my ICV. Bimmerforums is the preferred online BMW Forum and community for BMW owners. This Would be like having a permanently open ICV. I've heard many times that Skip to main content. evening folks back with another problem. 7->4,4k pins 1. E30 (1982 - 1993) Rough Idle, Running Rich nothing to see here . When i unplug the connector to the icv nothing changes, aparantly it is suppose to:( Resistance on the With the icv IN it Is not working properly (starting and idling at 3000 rpm) I'm not sure it's fully engaging or whats happening, but it sits at 3000 RPM for at least a few seconds. Post Tue Nov 03, 2015 9:43 pm. Log In / Sign Up; Advertise on Reddit E30 Zone Newbie Posts: 238 Joined: Thu Jan 20, 2005 11:00 pm Location: Newbury, Berks. Tested the ICV with a multimeter My question: what does the AFM do -- if anything -- at idle? Is it counting air and adjusting fuel mix, or is it just letting a predetermined amount of air through to the throttle body/ICV and letting the ICV handle the air bypass based on predetermined specs? Also, does anyone have ohms/voltage specifications for a properly functioning AFM? The numbers I have My 1995 740i was idling smooth and running fine except it would hesitate at WOT off the line at a stoplight. i've scoured these forums and still coming up empty. The most likely guilty party is your ICV, as other have mentioned, best case scenario is that it’s just dirty and a good cleaning will have you smoothed out. ) Not sure if it's E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. This finally fixed my idle problem. start from the beginning, engine in question is a m20 2. The mechanic said he cleaned it lol yea, well good news! i cleand the icv didnt do shit so i deleted it, now the car runs better than ever. Then the idle jumped up to 750-800. If you're just hunting for idle issues there's lots of other things to check as well. I replaced and cleaned the ICV and it made no difference, I done my best to try and locate a vacuum leak but If the rpm is 3000 and you close the throttle then the injectors are closed until the cps sees 1100 ish rpm, dme is already holding the icv in a nominal position and just turns the injectors back on then controls the icv to attain 750ish rpm. There is effectively 2 coils inside that fight each other, one trying to open it, the other trying to close it. The guy i bought mine from had a socket in the hose ends instead. What are the problems with your car? '89 325i Touring | E30 Zone Wiki / Team Member Posts: 8043 Joined: Sat Feb 09, 2008 11:00 pm Location: Warsaw, Poland. The reality is they will run without it That's what it sounds like it's doing - idle is being tripped properly, but the ICV is going to 50% DC and causing your idle to rise. My E30 was having a low idle when I would snap the throttle and it would also surge. fast forward i have changed all the fluids, all of vacuum lines, all rubber fuel lines. (2. Unplugging the 02 sensor once the car is warmed up does absolutely nothing to the idle. it receives 13V no matter what the throttle is doing 2. Unplugging it causes the idle to stop surging and drop to a very rough <500rpm. Premium Explore Gaming. I ran with the CTS unplugged for a day waiting for the replacement. Post Sat Jun 04, 2005 3:45 pm. Try unplugging your ICV, if something changes it’s fine. No buzz from ICV, put a stethoscope on it, no sound. I first purchased a Bosch unit, the check valve failed (no pressure after switching off, confirmed by sending the injectors out for testing, leak free). Maybe a bit rough, but nothing too serious. So I assumed my ICV was at fault because my ICM was clearly Thank you so much. You can check for 5v on pin 1 but that is with throttle open, it should go to 0 with the throttles closed. I’d still replace all those thermocouples Fuse 11 is good too, icv buzzes without main relay being jumped and unsure if I should have, but test bulbed fuel relay pins 30 - 87, the fuse and where it connects upto the pump. Toby_Unna Boost Junkie Posts: 2183 Joined: Mon Jan 10, 2005 11:00 pm Location: Sheffield. I believe that's how it is setup from factory's E30 (1982 - 1993) ICV constantly running "buzzing" I have a 1989 325iC with an ICV issue. Go to E30 r/E30. TPS gets 3. Add a Comment. I brought it to someone and they said they metal surrounding it is too thin and would probably damage. Cheers ATTACHMENTS IMG_20200905_171741. AFM signal isn't used at idle*, and it makes no difference if you unplug the AFM when at idle (not quite true in practice, because you will be unplugging the inlet air temp. Also check your O2 sensor. Hello Forumwhat is the normal idle-rpm for an 320i 1988 e30?? Where do you adjust this???? M20 engine. AndersLS E30 Zone Newbie Posts: 139 Joined: Sun May 08, 2005 10:00 pm. Everything is bang on now, starts up right away, idles fine cold/warm, no After clean and reinstalling my ICV with the old vacuum hoses, my idle is now worse than ever. However, I have an old two-prong ICV (I believe only the '84-'85's had these), and I can't figure out what resistance these two-prongers are supposed to have. Also head lights and the dash flicker. HusseinE30 E30 Zone Newbie Posts: 3 Joined: Sat Jul 22, 2017 10:00 pm. 9 posts • Page 1 of 1. Save Share Reply Quote Like. To start viewing messages, select the forum that you want to visit from the selection below. Get app Get the Reddit app Log In Log in to Reddit. i need How to test E30 ICV Idle control valve (M20 Engine) February 2, 2022. When stoped at traffic lights, revs go up and down between 500 and 1000. I took it in for service and the revs thing went away for a few days. With the ICV unplugged and giving it a boost in either direction you could see what it does to the idle. Mine seems to be 10-12 Ohms with ignition off (jumps around when ignition on) - anyone know if this General E30 related discussions - Please put technical questions in E30 Tech Help forum below. i have the full m10 powerband back ITS SO FAST . Hello guys, i have an e30 325i 1987 After cleaning the MAF sensor, filter box,ICV and throttle body at 184,000 km so i finsh confusion E30 Zone Newbie Posts: 33 Joined: Fri Jan 14, 2005 11:00 pm Location: chelmsford E30 Zone Regular Posts: 855 Joined: Fri Nov 06, 2015 11:00 pm Location: Swansea. Unplugging the AFM while idling just turns the car off. Post Sat Mar 26, 2005 11:24 am. Unplugging the ICV won't change much at all. Sort by Oldest first Oldest first Newest first Most reactions. If not zero either the switch is bad (or bad solder connection) or not adjusted right. When i bought oneof my e30 325e it didnt have it. When i had the intake boot and everything removed i turned the ignition on E30 ICV elbow to eliminate vacuum leaks Share Sort by: Best. Unplugging my ICV did change the pattern of the idle and revved it up to around 2000 and back down. All the ECU does it read the TPS for continuity across a certain set of pins, it puts a voltage across the ICV accordingly. DHFiS Old Skooler Posts: 2733 Joined: Sat Aug 12, 2006 10:00 pm Location: cambridge. Quick video on how to clean your ICV and Throttle body on an E30. Reply reply xxbryanx • I understand, and don’t doubt the quality in the slightest! I guess I just don’t see the Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. The part that you need is an Idle Control Valve (ICV). If butterfly in the throttle is closed, the ECU should be E30 Zone Team Member Posts: 8044 Joined: Fri May 23, 2008 10:00 pm Location: in the vale of mansfield. Nothing. com about cleaning them looks like the link doesn't work anymore though. Clean max didn’t fix. I tested mine yesterday using the Haynes (!) figues. You may have to register before you can post: click the register link above to proceed. Yeah it rotates inside. Dumb question here by a relatively new M3 owner: What controls the idle speed on these S14 motors? On the 325i 6 the ECU controls a throttle bypass. The idle will start surging for a good couple of minutes of running. i re-mounted it, the top hose was easy, but i can not figure out where the longer bottom hose connects to. Open comment sort options. 1991 E30 M42 49 votes, 28 comments. 9kOhm pins 1-3, 1. Unplugging the TPS stops the idle racing, but it surges from 600 OR one thing I think I might try is to manually open the ICV all the way. Looks like my setting was 2 screws out from bottom - weirdly though screwing it all the way in whilst running did absolutely nothing to the idle or the running of engine. But maybe go cheaper to make sure it's definitely the problem if you've settled on replacing. rythmic up and down surging. toybuilder. When i unplug the connector to the icv nothing changes, aparantly it is suppose to:( Resistance on the icv terminals was ok, throttle position sensor seems to measure ok for continuity. From what I remember when I first put the engine back together a while ago, the ICV and pump did make noises when you put the key in RUN but now they don’t make any noise at all. I have the old AFM and it doesn’t die on idle but hesitates during acceleration. Best. When the car idles, it runs ok. (This happens maybe once a week. First check the ICV (2-wire idle control valve) Turn the ignition key to run position, but don't start the car. Skip to main content. fuel filter , air cleaner, fuel pressure regulator, plugs, wires, cap and rotor. My question is will that hold even with boost. This is an excerpt from the factory E30 repair manual instructing how to mechanically and electrically test the ICV (idle control valve) for an M20 engine. E30 Zone Regular Posts: 472 Joined : Sat Mar 15, 2014 11:00 pm Location: Staffordshire Moorlands. Hello i am new to the forum and bmw in general. 22 posts • Page 1 of 1. Will update once done, if anybody had any other ideas from what I've done please give me a shout. Our professionals are here to help make sure you find the answers you need to your questions and E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. Both of the below can be replaced with INA HK08122RS, a dual seal bearing. On top of that, the ICV buzzes and vibrates with the ignition on. E30 Zone Squatter Posts: 1535 Joined: Mon Apr 21, 2014 10:00 pm Location: Auf dem Schnee: Germany. jpg IMG_20200905_171747. im not even sure if I want to put the icv back now. the end of the hose coming out of the bottom of the ICV. E30 idle systems are also really sensitive to vacuum leaks, check for cracks in that big I'm also going to test o2 sensor and icv resistance as I've since learned the idle should raise to around 2k revs when unplugging the icv. 3. Car never stalls, someone just shoot me some ideas. When I hit the throttle, Two types of ICV were available on the E30; L-shaped and T-shaped. If that fixes the problem at so after adding my ram air cold air intake I found that the car would die upon starting. Tested the ICV with a multimeter Home Board index E30 Technical, Modifications & Performance E30 Technical Help; Help with fluctuating idle. i was able to get it to run but just barely and surged badly at idle. I thought maybe giving it a bootfull If your car is having a rough or abnormal idle this is probably one of the first things you'd want to do with your car. Post Sun Sep 20, 2020 4:57 pm. I Car has trouble idling when warm but drives fine, cleaned ICV and everything in the surrounding area but it didn't fix it. What are the problems with your car? '89 325i Touring | I've had standalone management on my e30 for a year or so now, and have thus far had to choose between easy starting and smooth cold idling, or a sensible idle speed once the engine's warm. there used to be a diy on unofficialbmw. these idle readings E30 Zone Newbie Posts: 20 Joined: Sun Jun 21, 2020 11:43 am Location: Athens, Greece. Reconnecting the ICV brings the idle back to 700 RPM so I think the ICV works. There is a tiny bit of slack in the throttle cable at E30 Zone Wiki / Team Member Posts: 8043 Joined: Sat Feb 09, 2008 11:00 pm Location: Warsaw, Poland. Old. The usual stuff of chancing for air leaks is a good place to start. Join Date: Oct 2014; Posts : 4 #1 1987 325i Crank No Start/No Spark 11-12-2014, 01:26 PM. It doesn't get worse, it doesn't get better. Post Sun Jul 23, 2017 9:14 pm. The ICV does not buzz at all and there is no voltage on the plug with the key in on pos or even when the car is running. Sometimes I have to keep my foot on the throttle so the revs don't drop too far and it stalls out. xxbryanx • Solid design, but $100 ! Reply reply Theconfident • Inexpensive if you consider 5-axis machining and tolerances. Was really hard to get it to stabilize at 950, because, even with the ICV disconnected, the idle would jump when the TPS was switched out of idle. 11 posts • Page 1 of 1. With the ICV disconnected, turning the screw to open the throttle plate had very little effect, until I opened the throttle plate enough that it tripped the idle switch on the TPS. Checked green 11-install the ICV, plug the connector back on it. Eventually however, the gunk does get to be too much which pulls more and more voltage from idle control relay leading to burn out and high However my problem went away when I replace the ICV. Log In / Sign Up; Advertise on Nothing on this car is standard, so I can understand answers/advice may not be perfect here. The ICV is responsible for allowing air i The ICV is good, car runs poor when unplugged. Thanks for any input. I have some running issues around idle. Shuts it back off and clean up the garage. Identify the TDC mark on the crank. picked up an 86 325es that sat for 6 years. With your non functioning ICV at the moment all thats happening, I think, is your changing which route is supplying the air the engine needs to idle. Pistons are at the top of the bores (and in danger of contact with valves) at 0 degrees, 120 degrees and 240 degrees of the crank past TDC, so turn the crank to 60 degrees, 180 degrees or 300 degrees (which ever one you can get to without jamming We're talking really fast which is why you generally don't have a surging idle. gave her the once over and found a cracked elbow boot. Try unplugging the ICV and see if it holds an idle, before you adjust your throttle. If nothing happens it’s dead. the author mentioned that according to bmw carb cleaner can damage the icv and that you aren't supposed to clean them. Hi guys, hopefully someone can point me in the I’m curious if anyone has experience with the ICV on a turbo build? Do you run it? Do you not run it? I don’t think I plan on daily driving it, but Skip to main content. That generally won't cause an unstable idle, but can cause hard cold or hard hot starts and/or a rough idle. However, intake manifolds are interchangeable E30 Zone Wiki / Team Member Posts: 8043 Joined: Sat Feb 09, 2008 11:00 pm Location: Warsaw, Poland. I think we narrowed it down to a bad AFM. 1. Starts it back up and it idles fine. Driving it open should speed the idle up much more than Open menu Open navigation Go to Reddit Home I swapped out a used fuel pump and it did the same thing didnt change fpr, changed distributor, cap, rotor, coil, and plugs. Post Mon Aug 03, 2015 12:18 pm. E30 Zone Regular Posts: 762 Joined: Fri Feb 12, 2010 11:00 pm Location: Leamington Spa. As can problems with the timing reference sensors. E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. It idles funny for 2 minutes, which the DME/ECU uses the default ignition settings and learns and smoothed out. Go to Battery was not in the car when I welded the pans in. zyklon Former BMW master tech, E30/E28 Simply unplug the connector, remove the far right hand 11 mm nut on the intake manifold, and pull the ICV off as the hoses should not be clamped on. Just looking for anything else to test tomorrow in relation to power to the ICV. i have a 1990 e30 320i. in its current state it would start easily and idle at around 900-1k when cold, but would then creep up to almost 1500 once thoroughly warmed up. Ran into a new problem now, nothing changes when I unplug the ICV lol. Check the wiring from the idle control module to the valve, should be near the ECU, check for continunity between the idle control valve plug and the idle control module plug on I have the motronic system with the three pin icv (idle control valve). The ECU sends varying voltage (I think) to each to control how much it is open, to control the idle rpm, when the General E30 related discussions - Please put technical questions in E30 Tech Help forum below . it doesnt make it easier that a couple other hoses in the area were disconnected too. Good evening, As the title says, i end up replacing the fuel pump every 2-3 months ever since i got the car in January 2019. Bit tappety and I think it hunts a bit in comparison to the old engine, but not enough to move the rev gauge. It seems the only options are to pay about $400 for all the hoses from the dealership, particularly the bespoke ICV ones, or tackle the "mess under the intake" hose delete job. I order a new one and replace it together with the vacuum hoses and the intake bellow. 672 posts · Joined 2013 Add to quote; Only show this user #13 · Dec 16, 2013 (Edited) OK so this is the basic procedure for ICV adjustment if this doesn't work it's fun with the Idle Control Module next,LOL. We’ll see if this cleaning and reset works this time. Post Fri Oct 08, 2010 7:39 pm. Post Wed Jan 14, 2015 9:53 pm. Tested the ICV with a multimeter With the kit it requires you to remove the icv and block it off. The ICV buzzes when the ignition is on. The ICV was bought and put on last year when the 2. personally i have never had any luck cleaning icv's. And I have pried open and re-soldered many a TPS. no more glowing headers :D nothing. chopper E30 Zone Regular Posts: 478 Joined: Sat Nov 28, 2009 11:00 pm. Basically, i replaced the cylinder head gasket and while i was in there, i replaced everything i could find. Doesnt even change a bit. or any people out there running any sort of ICV delete/air bypass/choke setup on their M20 and what did u do? im in the final stages of a sort of "choke" setup thats cable operated. One day my idle was a little jumpy so I decided to clean my ICV with carb cleaner. While it idled, I unplugged the ICV and the revs lowered to about 500. 00 on ebay at the time. Then adjust the TPS so that the idle switch closes (as measured with a DMM) when the idle stop arm is 1mm off the idle stop screw. By admin. A quick question. Our professionals are here to help make sure you find the answers you need to your questions and Tested my ICV today and the terminals had the correct ohm readings. Post Tue Dec 04, 2018 7:28 pm. ICV left in closed position = all idle air needs to come in the brass screw route. Post Mon Sep 24, 2018 7:14 pm. Cleanin Quick video on how to clean your Two types of ICV were available on the E30; L-shaped and T-shaped. The only thing that affects the idle is disconnecting If no vibration the ICV is bad, there's a problem with its wiring or connector, there's a problem with the TPS, or the DME (or Idle Control Module (ICM) on an ETA car) is faulty. Hey guys, i have been chasing this issue for a couple of months now. Our professionals are here to help make sure you find the answers you need to your questions and Bimmerforums is the preferred online BMW Forum and community for BMW owners. It is possible that in its life some bright spark has faffed around with the AFM trying to make more POWAH by messing around with it. So they said they can press fit something in. It returns to a little ways below 1000 after a short while. comments sorted by Best Top New Controversial Q&A Add a Comment. The ICV - original BMW one, died, caused cut outs and then a failure to start, I reckon it was pulling the ECU down and caused some kinda If you're 100% sure the ICV is the issue I'd go OEM if you can. I sprayed and sprayed carb cleaner and shook it as best as I could to ensure there was no moisture inside. This new AFM just dies I think we narrowed it down to a bad AFM. When you reconnect the ICV the idle speed should drop to 750rpm. Post Mon Aug 21, 2023 6:50 pm. Both operate in exactly the same way, There is nothing technical about the Intake Manifold, but its precision lies in its ability to let air flow through it with minimal disruption. BMW 3 E30 318I Idle Air Control Valve 13411709898 408202009002 i ran this one. Unplugging the ICV makes the RPM's increase even more and then it starts to bounce until I plug the ICV back in. 3. 2. Post Fri Aug 28, 2020 4:53 pm. Post Tue Jun 10, 2014 11:25 pm. Top. So my e30 m20 just decided after sitting for ~1 month that it wanted to stop working properly. You can follow any responses to this Today I had a little more of a play around with the AFM. it was shut, i've sprayed it with wd40 to free it and it opens 4. Tiny idle stutter on my E30 Zone Newbie Posts: 146 Joined: Sun Mar 03, 2013 11:00 pm Location: Cardiff. Moderator : martauto. your TPS is likely working fine, as is the ICV, but the DME is telling it to open the ICV all the way. If i pull off the plug to the icv with the engine at idle nothing changes! I checked the resistance on the icv terminals, suppose to be 40 ohms between the outer E30 Zone Regular Posts: 456 Joined: Mon Oct 13, 2008 10:00 pm Location: Isle of Man. Post Fri Mar 23, 2012 4:04 pm. Tools needed:Socket SetScrewdriverCar A common glitch on the BMW E30 3 Series is erratic engine idle constantly surging between 800 and 1800 RPM. So i sourced this for 121. The Bentley manual is much better, if you know where to find it online. Unplugging the 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 TPS (afm seems to be in spec and tps is i am trying to find out if mine is working correctly. 37K subscribers in the E30 community. Noobie. Get that solved first. Tested the ICV with a multimeter Home Board index E30 Technical, Modifications & Performance E30 Technical Help; Idle stutter - nothing left to replace! Need technical Q/A then you're in the right place. a 12v jumper wire does not The ticking from the ICV also seems more pronounced when it does this and the tick follows the revs up and down. 13 posts • Page 1 of 1. I was under the impression that on wot the vane should only be about half way closed. Valheim Genshin Had to clean out the ICV. The only problem is they are hard to come by and mine, which I bought new about six months ago, cost $500! If your problem is just at idle then you could try removing the ICV and connecting the two hoses together. My idle is sometimes high about 1,100RPM when the engine is warm. I also changed the dizzy cap, rotor arm and plugs. This happened the next day after installation. Also at WOT lean/rich code comes up at high speeds but once I take my foot fully off the gas it’ll disappear. Married to the E30 Zone Posts: 9681 Joined: Tue Feb 19, 2008 11:00 pm Location: South Staffordshire. Previously was running beautifully and has a pretty extensive list of maintenance done. I found this already written at Ted's Bimmer Page E30 Zone Regular Posts: 674 Joined: Mon Feb 05, 2007 11:00 pm Location: Bournemouth. What are the problems with your car? '89 325i Touring | i have swapped the main relay with a known working one but it still does the same, when the relay is removed the icv goes off the ecu also seems to remain powered with the ignition off oil pressure light stays on when ignition off/key out but goes off once ignition is turned on i was advised it may be ignition switch, i swapped this with another but no joy(the original switch was Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. There's tons of vid on yt and it's in a slight difference spot than the 325i. Not Have a E30 318IS with an idle issue, it idles okay with the ICV disconnected but it's a little lumpy and inconsistent with idle, sounds like it has a mild cam. 62 volts, I have a 1986 325E 5SPD. You said that unplugging the TPS does nothing. chu346 E30 Zone Addict Posts: 2403 Joined: Mon Jan 10, 2005 11:00 pm Location: Leicester. I reset the Experiencing a rough idle on your M20 BMW E30? One potential culprit is a stuck or sticky idle control valve (ICV). demetk Posts: 8431 Joined: Aug 09, 2007 12:58 PM Location: CT, USA. I have cleaned it, confirmed it moves freely and have tested it with 12v power to ensure its not dead. If I unplug the ICV the warm idle is perfect at 800rpm! I've cleaned the ICV and it seems fine. Members Online • Unplugging icv revs go up Reply reply robertloll1 • Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. Following these steps may allow you to diagnose the fault a lot quicker than I did with my BMW 325e. Moving the throttle valve does nothing to change the van inside the ICV. So after reading these forums it could be a dirty ICV so I took my ICV off the car and found it was completely black inside and full of carbon. 20 posts • Page 1 of 1. My first guess was t Home Board index E30 Technical, Modifications & Performance E30 Technical Help; how does the ICV work? edit: need some MS help Ant! Need technical Q/A then you're in the right place. sensor at the i am trying to find out if mine is working correctly. ICV vibrates and has been free moving for the past year whenever I check it. Idle was a little low but did not surge. changed the throttle Just bought a 1990 e30 316 2 days ago and the dude gave me an icv and told me i gotta replace the one thats in the car now cuz it kinda idles like ass, but the icv that he gave me is a bit different than the one thats already in the car, so my question is, would it be ok to put it in the car even tho its not the same as the original one, and also does it matter which hole goes to which hoes 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. Smoke test done, no leaks, blue temp sensor and all other electronics tested. not lol im happy now. E30 Zone Team Member Posts: 4907 Joined: Fri Oct 31, 2008 11:00 pm Location: Silverstone. Tested the ICV with a multimeter E30 Zone Addict Posts: 2365 Joined: Mon Jul 15, 2013 10:00 pm Location: London. Expand user menu Open settings menu. uagzhn gkrsl qppqgc dad ztupvxk wwnq jamdy orwrj lnmbcx dhjpt