E46Fanatics - View Single Post - Vanos seals solution
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Old 12-06-2007, 10:23 PM   #41
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Join Date: Nov 2007
Location: Raleigh, NC
Posts: 1,300
My Ride: 528i 06/00
Originally Posted by Guy With A BMW View Post
Hi Rajaie, is the crackling sound at 1200RPM related to the seals also? I have the timming chain tentioner crackling sounds problem and at times my car stalls when coming to a stop or turning at idle...also my idle RPM is not stable. I have a 2001 325. Thanks.
E46 cars with the ZHP package have a rattling problem at ~2k RPM. This has been attributed to the vanos. Dr Vanos www.drvanos.com has resolved the problem and sells an upgraded vanos to address it. The upgraded vanos comes with the new seals.
Iím not sure if this is the problem you have.

Regarding the idle problems, here are some thoughts.
Remove and clean your idle control valve. Brake or carburetor cleaner will work.
This can be the MAF sensor. Remove it and clean it with MAF spray cleaner. Make sure to let it fully dry.
You might have a vacuum leak. The CVV and associated hoses are a common culprit for a vacuum leak.
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