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Old 11-13-2012, 05:39 PM   #20
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Join Date: Apr 2012
Location: Cambria county PA
Posts: 46
My Ride: 2003 330i sport 5spd
Originally Posted by richkopena View Post
Fast idle, then goes to a slower idle? Are you sure that is correct? Never have heard of this or seen it on my 33oci.
They got rid of this system in most cars with Drive by wire throttle body.

old cable throttle body had a fast idle system which worked like a choke on a carburetor.

Modern cars choke automatically. Your car is suppose to run rich on cold start ups which is why high idle is needed until warm up.

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