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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series & 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 05-03-2007, 04:40 PM
SCANDINAVIAN13 SCANDINAVIAN13 is offline
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Icv

Has anyone here actually pulled things apart to clean the ICV? I don't mean dreamt about it after reading DIYs. I mean have actually done it...

I just finished pulling, cleaning and assembling, but I want to hear how other people handled it.
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  #2  
Old 05-03-2007, 06:48 PM
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Bimrpwr Bimrpwr is offline
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i have read on this forum i think and others of people doing that and working for them. I havent had the need to do that yet and if i do i will prolly just replace it with a new one.
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  #3  
Old 05-03-2007, 08:55 PM
SCANDINAVIAN13 SCANDINAVIAN13 is offline
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I'll tell you what...if you're going down to do any work near it, you might as well keep it. Cleaning it is definitely the easiest part.
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  #4  
Old 05-03-2007, 08:58 PM
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Bimrpwr Bimrpwr is offline
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yeah...well i have a great source for parts so i would just replace it
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  #5  
Old 05-04-2007, 07:23 AM
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77vetteguy 77vetteguy is offline
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you dont have to take it apart to clean it. all you have to do is take it off and fill it with carb cleaner or somthing like that. then shake it for awhile and repeat untill most of the black buildup is gone. thats how i did mine.
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  #6  
Old 05-04-2007, 07:37 AM
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ive cleaned out my.... My dad cleaned out the whole throttle butterfly and all that mumbo jumbo in my old e30. It was a big headache and didnt resolve my lumpy idle...
The driveway is still stained from when the carby cleaner dripped onto the floor. Memories....
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  #7  
Old 05-04-2007, 10:52 AM
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whats an icv?
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  #8  
Old 05-04-2007, 11:02 AM
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Idle Control Valve
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  #9  
Old 05-04-2007, 12:02 PM
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For some bizarre reason, i cant find mine!!

I looked at the DIY and still cant find it.....fear i maybe totally bind (or useless)
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  #10  
Old 05-04-2007, 02:53 PM
silverbmw528 silverbmw528 is offline
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Heres my DIY for you,

E36 M52 ICV (Idle Control Valve) Replacement.

Part details

New ICV BMW Part number 02801405
Ł76.26 + vat from eurocarparts ECP part number 436110070

Tools needed

Flat Screwdriver
Socket set


The M52 ICV is located on the right hand side of the engine (Looking from the front) underneath the inlet manifold and is fixed by a rubber flange/bracket.

The silver body of the ICV can be seen to the right of the throttle body as is connected to the dipstick bracket. The ICV has one main electric plug at the rear, a vacuum hose at the bottom which goes to the bottom of the rubber bellows and the ICV is fitted to the underneath of inlet manifold by a rubber grommet which acts as a seal and fits inside a circular socket.


Procedure for replacement.



1. Disconnect the battery Negative. (Just for safety)

2. For better access remove the oil filter cover and cover the chamber with a plastic bag just in case you drop something down there.

3. Remove the three bolts holding the ICV and dipstick in place.




4. Disconnect the large rubber vacuum hose from the bottom of the main rubber throttle Hose (Bellows).

5. Pull down on the ICV to free from the inlet manifold.

The whole ICV will then pull through passed the dipstick. Be careful of cables and vacuum hose.

6. With the ICV part way out disconnect the plug from the rear and the ICV
Will then pull free from the car.



7. Lay the new and old ICV’s down together at transfer the hose and rubber grommet to match.



New one ready to go



8. Although removal is easier via the side, re fitting is easier via the front of the engine, under the inlet manifold.

Aligning the new ICV can be difficult as your working blind but take your time to insure it sits in the correct place and that you don’t accidentally
dislodge a vacuum hose. Be sure to pull through the large ICV hose.

9. With the ICV in roughly the right position re connect the electric plug,
Reconnect the lower vacuum hose to the bellows and push the ICV up
into the inlet manifold.

10. Replace the fixing bolts and dipstick bracket.

NB: Have a feel down inside the inlet manifold to ensure you haven’t
dislodged any vacuum hoses.



11. Replace the oil filter cover.

12. Reconnect the Battery.

13. Fire her up.
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  #11  
Old 05-04-2007, 03:15 PM
SCANDINAVIAN13 SCANDINAVIAN13 is offline
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Quote:
you dont have to take it apart to clean it. all you have to do is take it off and fill it with carb cleaner or somthing like that. then shake it for awhile and repeat untill most of the black buildup is gone. thats how i did mine.
I meant take apart the junk in the engine to get to it. For the M50 you have to take out the airbox and move around several hoses to get to it, thus "take apart."

The M50 ICV is buried in the depths of the engine, Pirate. Took me a few minutes to find it as well.
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  #12  
Old 05-04-2007, 03:31 PM
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Pirate_copy Pirate_copy is offline
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Wow, thats brilliant mate

Will have a look tomorrow

Thank you so much
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  #13  
Old 05-05-2007, 06:28 AM
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awsome!
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  #14  
Old 05-05-2007, 06:47 AM
Conehead Conehead is offline
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Quote:
Originally Posted by DominguesE30 View Post
awsome!

Dosent apply to us Dom. We have the easy to work on and sexy M44 motor..LOL
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  #15  
Old 05-05-2007, 06:57 AM
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Originally Posted by Conehead View Post
Dosent apply to us Dom. We have the easy to work on and sexy M44 motor..LOL
amen cone, amen!

WE ROCK!
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  #16  
Old 05-05-2007, 01:13 PM
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Pirate_copy Pirate_copy is offline
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amen cone, amen!

WE ROCK!
You do indeed.....but not for your engine
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  #17  
Old 07-23-2014, 12:33 AM
nuke21 nuke21 is offline
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Quote:
Originally Posted by silverbmw528 View Post
Heres my DIY for you.

Thank you very much for this DIY silverbmw528. Got mine taken apart thanks to this. Only problem I had was the rubber seal around the ICU that is in the inlet manifold didn't come outwith my ICU. And I tried to remove it and it began to rip a little so I decided to just leave it in. I am wondering if I should take apart the inlet manifold and replace that rubber piece now though...
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  #18  
Old 07-23-2014, 08:28 AM
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ZeGerman ZeGerman is offline
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Oh yeah, if anything rubber started to crack or rip, you should just replace it now and save yourself a headache later. Before you know it, you'll have a vacuum leak on your hands and the engine will begin to run terribly.
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  #19  
Old 01-28-2017, 03:13 PM
myBeamer328IS myBeamer328IS is offline
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Excellent DIY write up for the E36 M52 mate. I replaced the hose going from the bottom of the ICV to the intake boot. During the process I knocked the ICV grommet side out from the intake manifold and it would not go back in place. Im thinking the rubber grommet between the ICV and the intake manifold is old. Is there a place I just can purchase the grommet?
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  #20  
Old 01-29-2017, 11:09 AM
OzzieH OzzieH is offline
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I have a 94 325is so the M50TU engine. I did this refurbish about a month ago. It's tough but not impossible. If you have a reason to take off the intake manifold, then it will turn into an easy job.
I did mine with the intake manifold on and basically followed this: https://www.eeuroparts.com/blog/5416...e-replacement/

I put in new hoses and connectors. My accordian air intake was also split so I replaced that at the same time. I used throttle body cleaner and qtips to clean the ICV. Take you time with cleaning. Mine didn't rattle at first, but after cleaning whatever is supposed to move in there, did move.

Yes, the airbox comes out, and unscrew the throttle body and move it as far left in the compartment as you can. You will need excellent lighting to see what you are doing.
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  #21  
Old 01-29-2017, 02:59 PM
Abish Abish is offline
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I had mines out and cleaned it but now I hear it erratically moving when the idle drops, so disheartened

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