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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 03-07-2008, 12:31 PM
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rivercity rivercity is offline
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Idle Control Valve

So since I'm cleaning my MAF (again), I thought I would clean my ICV since I'm in there.

I found this link on another forum, (hopefully no one gets mad), and I don't want to steal anyone's thunder for this, just wanted to pass it along. (Plus when you look at the thread, I wouldn't wear slippers when working on my car).

http://forums.bimmerforums.com/forum...d.php?t=928735

This is the set-up for 528's, I know there is one for the 540's as well, this is only for the years of 97 and 98, (I could be wrong on that though).

Rivercity
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  #2  
Old 03-07-2008, 04:13 PM
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rivercity rivercity is offline
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I don't know if anyone on here has cleaned this, kind of a pain in the arse to get to, but overall I'm glad I did, my ICV was really dirty and almost stuck half way shut.

I will download pictures when I get everything buttoned up.....

Rivercity
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  #3  
Old 03-07-2008, 04:23 PM
turbobladz turbobladz is offline
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yeah it does help. Its not that hard to get to though I did mine in 30 min. first time
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  #4  
Old 03-07-2008, 04:28 PM
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rivercity rivercity is offline
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I agree, but I wanted to clean my throttle body as well, so I had to take bascially the whole air intake off......so that added a little bit of time to mine
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  #5  
Old 03-08-2008, 12:41 AM
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rivercity rivercity is offline
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After everything got buttoned up, I must say a big difference. The cold idle was great, and overall I think a great improvement.

Pictures to follow..........well if anyone cares.
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  #6  
Old 03-08-2008, 03:47 PM
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rivercity rivercity is offline
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Pictures

So I took some pictures of my ICV pre-cleaning then post-cleaning, of course you can see the difference, the roller inside was barely moving before cleaning.

If anyone needs some pictures to get this down, please let me know....

Rivercity.....
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  #7  
Old 03-08-2008, 03:48 PM
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rivercity rivercity is offline
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Oopppss, forgot to attach my pre-cleaning pictures.....
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  #8  
Old 03-08-2008, 04:47 PM
poolman poolman is offline
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Rivercity--did you reuse the engine plug or buy new on the reinstall?
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  #9  
Old 03-08-2008, 04:51 PM
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rivercity rivercity is offline
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Quote:
Originally Posted by poolman View Post
Rivercity--did you reuse the engine plug or buy new on the reinstall?
I re-used it Poolman....It was in pretty good shape, no cracks, and still flexiable for the most part.
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  #10  
Old 03-08-2008, 06:03 PM
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rivercity rivercity is offline
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I would recommend everyone to do this if they haven't in a while or ever. To me it makes a difference, especially in the cold start idle.
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  #11  
Old 07-24-2008, 09:21 AM
530ISPORT 530ISPORT is offline
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I'm gonna try cleaning this today. What If I need that little boot, how much would it cost and what is the part name for it, so I can see if my local parts store has it.

Also, can this be cleaned without removal?
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  #12  
Old 07-24-2008, 09:51 AM
supark supark is offline
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Quote:
Originally Posted by rivercity View Post
So since I'm cleaning my MAF (again), I thought I would clean my ICV since I'm in there.

I found this link on another forum, (hopefully no one gets mad), and I don't want to steal anyone's thunder for this, just wanted to pass it along. (Plus when you look at the thread, I wouldn't wear slippers when working on my car).

http://forums.bimmerforums.com/forum...d.php?t=928735

This is the set-up for 528's, I know there is one for the 540's as well, this is only for the years of 97 and 98, (I could be wrong on that though).

Rivercity
Yep - 540i's only have an ICV 97-98 when they had a mechanical throttle linkage. Got rid of it when they switched over to electronic throttle in 99-up MY. 540i's are lucky though because the ICV is located on the front of the engine and is very easy to access.
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  #13  
Old 07-24-2008, 09:57 AM
justinkh22 justinkh22 is offline
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would this be the same for a '84 318i?
thanks
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  #14  
Old 07-24-2008, 10:28 AM
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540 M-Sport 540 M-Sport is offline
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Originally Posted by justinkh22 View Post
would this be the same for a '84 318i?
thanks
Doubtful, that should have an auxilary air bypass valve, it is operated by a bi-metallic strip/spring mechanism. You can clean it, but they are not as sensitive in operation like the motorized version shown here. Usually the only fix for yours is to replace it, a not uncommon thing when the car gets over 100k or 10 years. Do a google search on "Bosch L Jetronic fuel injection"...that should get you a tutorial on how your system works. (it is old )
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  #15  
Old 07-24-2008, 03:17 PM
Waveho Waveho is offline
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Quote:
Originally Posted by justinkh22 View Post
would this be the same for a '84 318i?
thanks
Cleaning procedure was the same for my old e36 325i, if that helps. That ICV even looked identical to that on my e39, but was located more underneath than on top, as it is on my e39.
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  #16  
Old 09-01-2008, 04:45 PM
flowlikeit flowlikeit is offline
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suggestion, don't use wd40 when cleaning the valve.....it could potentially lead to problems down the road by eroding some of the metals inside (or so i've been told)
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  #17  
Old 09-01-2008, 05:43 PM
flowlikeit flowlikeit is offline
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is this applicable to 530's as well? or just 528?
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  #18  
Old 09-02-2008, 02:41 PM
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Originally Posted by flowlikeit View Post
suggestion, don't use wd40 when cleaning the valve.....it could potentially lead to problems down the road by eroding some of the metals inside (or so i've been told)
What would you use then? Electric cleaner? Or maybe that MAF cleaner? Sorry, I am not familiar with those solvents
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  #19  
Old 09-02-2008, 04:02 PM
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What would you use then? Electric cleaner? Or maybe that MAF cleaner? Sorry, I am not familiar with those solvents
I've always used carberator cleaner with good results.
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  #20  
Old 09-02-2008, 05:29 PM
Waveho Waveho is offline
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I would only use "Throttle Body Cleaner" because it is always non-conducting.
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  #21  
Old 09-03-2008, 08:09 AM
02525 02525 is offline
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Turbobladz...help, please

I have a 525 as well, and have been wanting to clean my ICV. Most of the procedures posted seem to be for the 528 and 540 which have different locations for the ICV. When you have a moment, could you please post a step-by-step procedure for locating and cleaning the ICV on the 525? Also, did you clean the throttle body too? If so, any advice on that would also be appreciated.

Thanks!!!
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  #22  
Old 06-17-2009, 10:44 AM
cn90 cn90 is online now
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Did you guys REPLACE the ICV with a new one or CLEAN it?
Is Cleaning good enough?

(A new ICV is $150 bones!!!)
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  #23  
Old 06-17-2009, 12:12 PM
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BMRSEB BMRSEB is offline
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I just cleaned mine, no real need to repalce unless defective.. Nothing really noticeable as far as performance, still have idle issues; VANOS, CCV??
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  #24  
Old 06-18-2009, 06:14 AM
armstm0 armstm0 is offline
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I cleaned mine with petrol (gasoline), then let it evaporate off before replacing. Idle much better.
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  #25  
Old 06-18-2011, 01:48 AM
Chad Sollars Chad Sollars is offline
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These are few steps that i know on how to clean the idle control motor. First, remove idle control motor using screwdriver, hold the valve that it is pointed downward and spray end of the valve with carburetor cleaner. Replace the idle air-control valve and test drive the car to make sure it is alright already.

Last edited by tim330i; 06-20-2011 at 12:11 PM. Reason: spam link removed
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