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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 08-01-2011, 12:45 PM   #1
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Join Date: Mar 2006
Location: Albany, NY
Posts: 161
My Ride: 330CI
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Start-up idle issues

Did a lot of searching and could not find a fix for my idle issue.

It only occurs at start-up only, but randomly, regardless if the engine is warm or not.

At startup, this is what happens:
-Engine will not start
-Push on the gas while turning the key & engine will startup, but idle rough feeling like its running on half the cylinders. A srong smell of gas comes out of the tial pipe as well.
-Push on the gas again for a second, the engine reves up to 1500 rpm's and the idle corrects itself and runs smooth with no further issues.

I am thinking it is not a lack of gas, or spark, rather an issue of air at start-up. I have a hunch its the ICV or Throttle position sensor on the throttle body.

I have already done my Vanos, CCV upgrade, fuel filter, spark plugs, cleaned my MAF, DISA & ICV. I have a 117K on the car.

Anyone have any ideas on how to trouble shoot to determine what is causing the porblem?

Thanks you all in advance for your input!
Gray 2004 330CI ZHP
EXNoodle is offline   Reply With Quote
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