Idle Control Valve (ICV) location??

I have searched till my eyes cant read any more and I have come up emtpy as far finding anny DIY for this. Where is the ICV located and hard is it to clean it or change it?

It's probably slightly to the rear and above the throttle body, hiding under the intake manifold and/or DISA valve.

I think the intake manifold assembly changed in late 1998. Do you know when your car was manufactured?

not sure 'bout the '98 model but on mine it's under the inlet manifold towards the rear(near bulkhead).
i removed the cabin filter housing for a much better access.

You should have started the post by asking" where is the worst place they could mount the ICV", its under the inlet manifold towards the firewall as stated already.
I've just replaced CVV and hoses without manifold removal,to do this you remove a lot of parts to get there,you may get to it but removing the hoses could be an issue,others may have done it with manifold in place
Do you have an idle problem?

If I read the realoem diagrams correctly, the 528i manufactured up to 9/98 had the ICV toward the front of the manifold attached to a hose from the intake boot just ahead of the secondary throttle body. After 9/98, the ICV is toward the back of the intake manifold.

Thanks for the help, I was afraid it was under there. The problem I'm having is rough idle at start and a sound coming from under the intake area thats sounds like a damn squirrel fan. I just had the head gasket replaced and at the same time did the CCV and VANOS. I had to replace the VANOS solinoid on it also. Did that yesterday and cleared the CEL, the car ran great till I got to my first stop about 30 miles later. When I restarted the car I got CEL again and a crappy performiing car. the squirrel cage sound I noticed yesterday before I replaced the VANOs solinoid. My mechanic thinks the sound is the ICV

BTW I only get the sound when the car is at idle

Maybe DISA valve (sound)?
The ICV is pretty much underneath.

I had dat same problem. Check the hose thats connected to icv they tend to tear easy. Which cause an air leak, If its the hose pelican has it for cheap.

Sent from my PC36100 using Bimmer

Originally Posted by 74Hustler

I have searched till my eyes cant read any more and I have come up emtpy as far finding anny DIY for this. Where is the ICV located and hard is it to clean it or change it?

Dunno if you already found these, but, a quick /ICV in the bestlinks nets this, among others:
- How to clean the idle control valve ICV in the E39 V8 (1) & I6 (1) (2) (3) (4) (5)

In addition, this thread (also in the bestlinks so you probably already found it since it's the first link in the forum) purports to show where all the parts are in the engine bay:
- Getting to know your E39 engine, a photo & identification guide to every visible part in the engine bay (1)





So that we may improve these threads ... do they show the correct location (for you?) of your ICV?

If not, please post a picture to that thread with your improvements (so the next person has an easier time of it than you did).