How to Clean BMW IAC ICV Idle air control valve and what symptoms to look for e30 34 e36 e39 e46
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- Опубликовано: 24 авг 2024
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How to Clean BMW IAC ICV Idle air control valve and what symptoms to look for e30 e34 e36 e39 e46, in this video i demonstrate how to clean the idle valve on most bmw's and explain how to diagnose problems caused by the IAC ICV , i apologize for the odd camera exposure, for some reason the yellow towel and bright sunlight makes my camera do strange things.
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So I did this and had an issue after lol. Don’t forget to spray lubricant like lithium grease or even motor oil back into the valve! The bearing inside needs grease so it doesn’t seize 🥲 mine seized and I had major idle issues with AC on until I lubricated it. Now it’s fine!
Thank you for all these BMW E36 vids. You're a smart guy and it's help me learn alot.
Yo Nathan, just wanted to give u a shout out saying 'thnx 4 all vids an knowledge u pass out. Really appreciate ur time!'. As we all get older, we come to realize just how important 'time' is. Anyways, thank you!
Main idle valve issue symptoms:
- Floating RPM during heating
- Missfires on cold start during heating
- Transmission kicks between shifting
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Would've liked to see where in the engine this was located. I just got a check engine and code that indicates this valve is now working properly. Good video...thank you.
and I am here cleaned the idle control valve with some oven cleaner and some olive oil
He is truly a man of culture.
What
I used brake cleaner, it was nice and shiny when finished
Just bought a new one hope it makes my e30 run better! 🙏
So is your car running better now, after installing the new ICV?
@@eaglerider94 no I sold it lol. I’m over project cars I bought a bike.
Thanks for the excellent vid Nathan, helps me heaps mate! Cheers 🤙
my e39 525i has trouble starting in the cold, shuts off, have to keep pressing accellerator to keep it warm, i have multiple cylinder missfire with fuel cut off codes
Hi Nathan, I just purchase a new Bosch IAC and it does not rattle out of the box. Should I return it? Thanks
Thanks Nathan very informative
I have a 2006 E53 w/M54 . P1093, P0303 codes. Cleaned ICV codes went away for a few days, came back. Should I replace ICV or could something else be causing it to malfunction?
Great video nate
I've filled them with diesel fuel, let it sit for awhile, shake vigorously, then drain it and blow it out with compressed air. Looks like new internally!
Thank you for the video bro very helpful
Good Nathan please I just wanted to know can this cause the EML to also come on.
Hi Nathan....I am a big fan and tell all of my BMW buddies to watch your stuff.
I have a question...Right now I am working on an 85 E30 318i and the ICV is like new and works when I hook 12volts directly to it...but the wire connector going to it only provided 11.5 volts or so... and it idles up and down....but if I hook 12 volts directly from the battery it runs and idles fine. Why is the connector only giving 11.5 volts to the ICV ?
Thanks Dude....you're the best !
Nathan’s Karma bank is topped up .. again. 🍺👍
Ok thanks for getting back to me so soon much appreciated
Mine was locked up tight and stuck in open postition. The car hasn’t been starting and flooding on start up and barely starts and been chasing it replaced crank and cam sensor it has spark has fuel. I just cleaned it and it’s free now. But I have oil soaking in cylinders because it flooded so bad and lost some compression.
great DIY, thank you :)
Thanks Nathan, good job. gonna see if this stops my car from sputtering and throwing codes P0170 P1188 and P1189
Did it work for u?
?
Is it supposed to be loose or to be stuck when you wiggle it?
Hi everyone...I have 2002 BMW 530 ...my car starts fine at first , will drive it for few miles and it starts to hesitate ...I will shut it off and turn back on , and runs fine for few more miles ...I replaced the fuel filter and noticed it had the original one !.. any idea what could be the problem ...please and thank you .
good clip like the information
Hey Nathan, where is this valve located on the E34 and is it the same as this one you just cleaned?
The valve is located in the front of the engine on top of the air intake
While replacing grommets on 2002 bmw 330i I broke the screw onto which the grommet casing is applied by over torquing. Can I replace the under screw?
I was wondering why my car might not start properly sometimes.
This rotating valve was actually jammed.
Did the clean as you suggested however I used WD40 and a heap
of black junk poured out both sides. Tested the start and it works
first shot every time. Nathan, you're the best.
PLEASE keep this sort of stuff coming :)
It could be this or a camshaft or crankshaft sensor, if there is no check engine light I would say try this first.
Hey brother Nate. Trent from Mt Shasta bmw tech. Read my comment for the icv. It put me thru fucking hell. Trans limp mode and everthing. I earned a new fucking stripe finally diagnosing this one brother. Icv passed the clean and shake. No icv codes ... Fucked wth the throttle adaptations and would make my auto tranny limp mode for incorrect engine load being sent to EGS during shift. Threw me into limp mode. Jyst wanted to share with you cause I know you will understand and feel my pain. Finally 3 months and so much headache later. Earned me my baby back. 05 325xi S56 swapped. Bavarian rocket ship flys again my friends.
Love your channel for many years and BMW Doc as well. Wanted to share this knowledge with you brother. Hope you never have this problem come I your shop. Ice cause trans failsafe... Wtf?
Great tip guy!! TY
Much yes
thanks!!! thats help me a lot
Awesome!!
Thanks for your tip
Thank you for this video
Hello I'm glad this helped you, I need to apologize again for the camera exposure being a little off on this one.
my ICV doesn't move at all. I've soaked it in brake cleaner and tried freeing it up by pushing the internals and it barely moves. Anything I can do, or buy a new one?
can i use maf cleaner to clean it
Hey Nathan hope your doing well... I've watched a lot of your videos. I own an x5 3.0i 2006 it's in good shape but am having idle issues such as rough and also chk engine light on .when I read the codes there were (misfire) and( too lean) issues. Do you think I have to clean my idle valve and or what should I do?? Thanks in advance
I bought a 1996 528I it will crank but will not idle could this be the problem
Are they all repairable and cleanable? At what point is it useless? I really don't wanna shell out $200 for a new one. Amazon reviews say its hit or miss for the cheap $30 ones and they can last a couple years to a week :/.
My e36 only has a miss fire at warm idle. When coming to a stop my idle does go up and down like 200 rpms for a little then quickly stays at correct rpm. I have Bremi ignition coils that are 2 years old. Missfire does not happen under load. Think a stuck ICV could cause this?
Did u find the problem?
Yeah!!! Thank u!!
yo nathan, I have a 1994 bmw 740il. I changed the spark plugs because it didnt idle very well. in the process I decided to clean the throttle body. Once I turned it on there was alot of smoke coming of the exhaust. it hasnt gone away completely but its less now. I think the car idles worse though. it only does it when its cold and I have to accelerate to get it to stop shaking so much. Thanks for reading.
Spark leads on wrong?
Hi love the videos. That is what I'm doing to my 99 528i and I started it. And give it gas and it goes like it's dieing but I let go the gas and it idols but it's still running rough if you could help I'm just not seeing the problem
Mike Norman
Do you have CEL? If not, i’d check fuel pump and fuel filter. Could also be spark plugs or ignition coil. It could be a lot of things but start with those.
Most of the time, those are Vanos problems. google it. Beisan systems offers a repair kit. Its really worth it with the 2.8 motor
Sounds just like my problem 😅
Where on the car is this?
hey Nathan i have a 03 540i with the m62tu and it has a low ideal. where is this part located
+Darren Flanagan the m62tu does not have a icv, it is made into the throttle body
2011 n55 save location
This icv 3wire or 2 wire?
Hey just wondering, I've been trying to make my 03 e39 pass smog for 5 months but I can't get the second air and 02 heater monitors to reset. And yesterday I got a code for bank 2 fuel trim running too rich. Would this be the issue for the monitors as well?
+Anwar Anwar If you have oxygen sensor heater codes those sensors will need to be replaced, what codes do you have exactly?
+Nathan's DIY Garage I do not have any codes. It's for my emissions test in the state of California. I can not get the monitors for second air and o2 heater to become ready
unhook the battery and touch the cables together and hook it back up, that will restart everything, im glad i dont live in california so i dont have to deal with that crap
A bit late, but for anyone who finds the thread... I had secondary air code and it was the line going to the valve had cracked at the bend in the RF wheel well. The vacuum line to the valve was also seriously deteriorated and I replaced it at the same time. O2 heater code probably means the O2 heater circuit is open - in this case most likely bad pre cat 02 sensor on bank 2. Definitely related to the lean codes.
I have a 1998 E39 my service engine light is on and i found that have 5 codes , 1384 knock sensor 3 circuit, P0505, idle speed control valve closing solenoid circuit electric, PO116, engine coolant temperature circuit range/performance problem, and PO170, fuel trim malfunction bank 1 and 2 can you possibly help me fix these problems? the car seems to be running great! but for how long? What can I DO?
+David R. The knock sensors usually dont go bad so check the connection and inspect the wire for damage, clean the icv like shown in the video, and inspect the throttle body boot for cracks, the temp sensor is on side of the cylinder head toward the rear under the intake manifold, make sure its plugged in and the wires are good, if not replace the sensor which is not easy to do
My 98 E38 has started not starting when cold on the first try, it takes some times 1-5 tries. No CEL, could this be the culprit?
My issue was the cam position sensor
I have E36 M3 swapped into an E30, when I have AC run, and in 3rd, and come to stop, there is potential for car to die. Only with AC on
my 98 e39 540i is doing the same with AC on if I get off the gas rpm drops down and dies before it has time to stabilize.
Same here, it barely makes it when ac is running, starts fine and ecerything, but like you sad when you let throttle and shitft it out of third gear it has problems...
Is there a way to fix or what.
I belive this valve is okay because when i start it at -15C or something it idles 1150 rpm
I would clean the ICV, i just cleaned mine today after having the same problem as you. When i came up to a stop light and put the clutch in, the rpms would drop bad and almost kill the car. Cleaned mine today and went for a drive with AC on full blast. No rpm drop at all.
where is it the location of it ?
i need help, i have a 1995 bmw 318is m42, my vehicle starts up when its cold but once its starts getting a bit hot it shuts down, i replaced the coolant temp sensor, the flow meter, but still the same thing, could it be the idle control valve?
+PR VIDEO GAME PRODUCTIONS could be the icv or the crank sensor, any codes?
I got an 2006 x5. Driving me insane.. Ive replaced two intake hoses to include the elbow that had a hole. Reppaced coils, sparkplugs, MAF, secondary MAF. It still idles low and every few seconds I hear the engine idle up, then it slowly idles down again, jumps back up. My idle control valve seemed to have been clacking fine. I get the lean codes, check engine light ONLY when its at idle, or reverse. Any help? What junk!
good luck man i let my x5 sit for a year and it never ran right after that. new plugs etc
What if the Icv is stucked? As in, it doesn't make that clicking sound when you shake it
i know im pretty late on this but if it is stuck and doesnt make a clicking sound, try cleaning it and seeing if that does anything, if not you need a new one
@@goiz2422 I eventually got a new one and it is working fine. The current issue I am having is shortage of oil. I want to try and change the pcv first and see if the issue still persist.
I found this method is wrong because there's a little bit amout of grease on both ends where the inner shaft sites, by spraying cleaner inside you gonna remove all that lubrication in there , what I do I take ear cotton stick dip it in TB cleaner and clean the inside.
does throttle body cleaner work?
+antonio buffalo yes that will work
Hey nathan my 97 528i is reving up and down and accelerates on its own any thoughts
Matthew Knight probably needs the icv cleaned
@@NathansBMWWorkshop okay im going to do that as well ... but also ive seen people saying the coolant temp sensor can be to blame as well and my temp sensor is bad becasue check engine light is on for it ...... the one in tbe radiator was replaced by previous owner and looks fairly new but scanner is saying.... p0116 engine coolant temp sensor #1 ...... which temp sensor is number 1???
Trying to figure put whixh sensor to buy
@@NathansBMWWorkshop i cant find anything anywhere that says which coolant temp sensor is #1
where is this located can not find it Thank you
What engine do you have? Chances are it's hiding under the intake manifold
The problem is you don't show how to take it off. Please update the video and show how you took it off and put it back on.
Is the e60 pre-lci the same?
+Carlos Neves If you have the m54 yes it is
Thanks
My e39 seems to run rough at idle when cold. But afterwards, as the engine heats up, the rough idle goes away. Could this be the problem with my car?
usually that is a coil pack or vanos seals
Luke Malhotra dude i feel you, my rmps jump alot, car stalls, shakes and once in awhile backfires and refuses to go over 20mph with 4-5000 rmps. Will clean thr IDV first but thinking seriously about the vanos
The thing is, my car has done less than 65,000miles on it. So I don't think the Vanos is the problem. On top of that, it's a 02 model. It's probably more of a vacuum leak issue. I had the valve head gaskets and all sparkplugs changed at a BMW specialist. The throttle body is still functional. No irregular jerks or delays in throttle output. The car is running fine albeit with the rough 4min idle up to warm temperature. I'll be taking it back to the specialist next month for a possible change on my ATF pipes and reservoir.
Luke Malhotra good luck, man
Question: I notice a distinctive humming noise when the key is in the "on" position. I've confirmed the noise comes from the Idle Control valve. Is this humming noise normal? Or does it indicate (as I think it might) that the valve is faulty?
Great video! My valve stuck--when I started the car on an extremely cold day. It sounded like a jet engine. I shut the car off (not knowing the issue). Next morning I tried starting the car and it wouldn't start. Cleaned the valve (it was stuck) and it still doesn't start. Diagnostics show no codes. I've changed the crankcase, camshaft intake & exhaust position sensors so far. I've confirmed fuel pressure to the injectors. Still no start.
Mine hums buzzing sound with key on.2005325xi E46 m54 . idle valve making the noise. Unplugged it no more noise . peeps say it's normal. IT IS NOT. Buzzing sound means the internal solenoid is stuck... Think like a starter solenoid.. Same principle..
It will cause all sorta problems and codes and may never throw a code for itself. Mine was fucking with throttle adaptations because the idle valve operates AT ALL TIMES.. It's what turns your idle upo for AC, for extra current draw. Mine was even causing limp mode because being stuck trying to open itd draws a lot of current trying to get unstuck. Well the automatic tranny takes a lot of current to push the shift solenoid s to shift gears.b so my car would go into transmission limp mode cause it had insufficient amperage due to the stupid ICV valve staying buzzing cause internal solenoid was stuck.
Kicker is .. NO CODED FOR ICV, & and it passed the clicker test after I'd clean it. So JUST CAUSE THE VALVE CLACKS WHEN YOU SHAKE IT DOESN'T MEAN YOUR VALVE IS GOOD. I KNOWFROM PAIN AND EXPERIENCE. 4 MONTHS IT TOOK TO DIAG THE TRANS LIMP MODE.. FROM A STUPID ICV. FUCKING HELL MAN
Hey Nathan, is there a hose that comes out with the ICV? One video from Bad Auto had a hose attached to it when he pulled it out but other vids there is no hose. I'm replacing boots tomorrow so please let me know if you get see this. 👍
Bav Auto*
E38. Iacv. Cost $235. Will try and clean. Getting code p505 and p301. 225000 miles
hi i have 98 bmw 528i and have cold start problems. i have to step on the gas to make the car idle smooth. when the car warm up no problems starts like a champ please help. and has a code camshaft position sensor. i replaced but code wont go away thanks. excuse my bad English
The cam sensor has either been replaced with a china sensor or the sensor is bad, someone didnt set the engine timing correctly, thats the cause of your cold start issues to im sure
+Nathan's DIY Garage i bought the camshaft sensor at napa auto parts. at first was fine for a couple months then engine came on. wen to napa changed camshaft s again. since that engine light wont turn off. how to set engine timing. is it expensive if i take my car to mechanic? i dont know how engine timing moved if only replaced camshaft sensor. THANKS
what brand is the sensor?
+Nathan's DIY Garage on the box has th name of original meyle products. meyle teile. germany
you should overhaule your Vanos with the Beisan Vanos kit. Google it.
Hi Nathan I was wondering if I could get some help with bmw 01 330i, is has lean codes and misfires on cold starts I’ve replaced the disa valve the idler control valve new plugs the pvc system I’ve checked for vacuum leaks I’ve exchanged the injectors that I got from pick and pull the only thing I haven’t replaced are the o2 sensors you think it could be those that all went wrong at the same time
armando R
Could it be something as simple as the gas cap?
on the box has the name of meyle products, original MEYLE-teile. meyle germany
Could be the icv dirty or i haven even seen spark plugs do that
+Nathan's DIY Garage i just replaced spark plugs a week ago. and cleaned fuel injectors too. do u have a video where it shows the location of icv? thanks. i gust thats my last option huh?
Well if you still have that cam sensor light it could be out of time, does the light ever go off or has it been on since you had the car?
+Nathan's DIY Garage the engine light its been on almost for 6 months today. i run the scanner and deleted but when i turn the engine on. engine light turns back on right away. and sometimes when scanner is scanning it say cant read the protocol or can't establish communication with the server something like that.
its very possible the engine could of ben taken apart and not re-times right
Code p1500: problème my car e46 320ci eml
What causes the idle to surge when the air conditioning is turned on? I have no issues with idle, but it when I turn the ac on it dips and hunts periodically. No check engine lights. Fuel economy is really good....21mpg in town......34mpg on the highway.
Let me help you. The idle automatically goes up to compensate the load placed on the engine by engaging the A.C. if it doesn't then you have a problem.
@@BMWBADBOYM3 Ok, I see. The thing that seems a little off is when it dips in idle before coming back up. But perhaps cleaning the MAF sensor and throttle body would help?
@@TangoCharlieAlpha What type of car are we talking about? Year model etc.
Also make sure if you clean the MAF use the right cleaner and be very careful. You might damage it.
Clean the throttle body with a good crab cleaner. But I doubt the throttle body causes it to misidle
@@BMWBADBOYM3 I have a 2001 BMW 330i, manual transmission.
once the icv is cleaned and re-installed , does it need to be reset? i removed/cleaned mine today along with spraying all of the electrical connectors and including the MAF and now my e39 m54 520i is running like a bag of nails. im wondering if ive trashed the MAF or theres a reset needed for the icv. great vids by the way, since my e39 has started giving me trouble your vids have been great for info/learning. cheers Nathan.
oh yeah, the car threw out a p0414 code secondary air valve A open circuit after doing this
Jay Sargent
What did you use to clean the MAF? There’s specific MAF’s cleaners out there, make sure to use those.
hey bro ...do you know where is that valve located on a 2007 bmw750li? thanks in advance
+hectormarin95 Hello if the n62 does not have a idle air control valve, it uses the secondary air pump system for that, the n62 has alot of problems with clogging with carbon , the secondary air pump tubes, they make a kit that is really expensive to do this yourself i believe its a few hundred dollars, the dealership wants $6000 to do that job lol, i dont have a e65 or e66 here at the moment, i was trying to buy one last week but the guy sold it before i could get to it, i want to get one here to do some videos on alot of people ask me about these cars.
+Nathan's DIY Garage dam lol .... I think it does have it but I just don't know where is located
Whats the symptoms?
+Nathan's DIY Garage it might be somewhere around the throttle body don't you think. ..and I didn't heard something about all the clogging on this engines. ...
I did * I mean
Hi Nathan, my e46 does this while i keep holding gas pedal steady at 1k rpm. I cleaned ICV, TB, replaced MAF, air filter, Fuel filter & pump, installed used DME but no difference. What can cause it?
ruclips.net/video/LOsr_JNBD2g/видео.html
Hey Nathan, I've got an occasional idle problem on my Z4 2.5. Starts fine but idle jumps from 900 to 1200 rpm, if I shut it off and try a restart it is usually fine. Wondering if this maybe an ICV problem. attached a vid on what it is doing. ruclips.net/video/Y-hzMHISGvg/видео.html
Great video...how to use cleaner. lol. I want to know how to remove it, not how to use a can of MAF cleaner...useless.
There are videos for that too. Read the descriptions.
Warsher
Mine went bad by just removing it from the car, piece of junk
I have a problem with idle fluctuation and stalling after my upper radiator hose broke and I lost a lot of coolant. After I fixed the radiator hose this idling issue pops up and I have a error code 002DEC.
I would really appreciate the help.
Did you manage to find the problem? I have the same problem
Bad battery or charging system problem. I noticed these cars get weird if the battery voltage is low. I get problems with the car not responding to the key, doing weird things with the key presses, and it will throw EWS codes in INPA. Also other weirdness like the MID backlight flashing every few seconds or a gauge freaks out. Charging the battery fixes it but ultimately the brushes and bearings in the alternator were worn and needed replacement. Battery was only being half charged.