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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 12-14-2008, 11:59 AM   #1
strelnikoff
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Very weird idle issue!

Only happens at speeds of 20-40 mph and car is coming to a stop (foot off the gas pedal). The idle will fluctuate between 800-1000 rpm. Seems to happen only when the car is wormed up (about 5 mins into driving). Now here is the kicker: it does not happen when the A/C is ON! With the A/C ON, the idle speed does not fluctuate in that speed range. This weekend I replaced oil separator (CCV) + separator vacuum hoses. I have also cleaned the icv and throttle body. Need help, this is driving me nuts!!
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Old 12-15-2008, 01:52 PM   #2
strelnikoff
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bump
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Old 04-23-2009, 09:29 PM   #3
strelnikoff
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Turned out to be vanos oil pressure hose. there was a vacuum leak where the hose was crimped at the factory. replaced the hose this past weekend. the easiest way to get to the lower part of the hose is from under the car.
hope this info helps somebody
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Old 04-23-2009, 10:36 PM   #4
dh0licious
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Quote:
Originally Posted by strelnikoff View Post
Turned out to be vanos oil pressure hose. there was a vacuum leak where the hose was crimped at the factory. replaced the hose this past weekend. the easiest way to get to the lower part of the hose is from under the car.
hope this info helps somebody
Thanks for the update dude. Can I grab the part number?
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Old 04-24-2009, 08:14 PM   #5
strelnikoff
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the part # for the pressure hose is 11-36-1-705-532. you also have to use four new crush washers # 32-41-1-093-596. to get better access to the hose remove the filter box/maf sensor assembly. all in all a very easy job.
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Old 04-25-2009, 01:04 AM   #6
dh0licious
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Originally Posted by strelnikoff View Post
the part # for the pressure hose is 11-36-1-705-532. you also have to use four new crush washers # 32-41-1-093-596. to get better access to the hose remove the filter box/maf sensor assembly. all in all a very easy job.
Good man, thanks for your help.
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Old 04-25-2009, 01:32 AM   #7
vids_blk323Ci
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do you know if the car was throwing a code via SES light?
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Old 04-25-2009, 01:07 PM   #8
strelnikoff
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no, it didn't throw any codes...
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