Quote:
Originally Posted by W Cole
Hey guys,
Hoping someone here might be able to point me in the right direction. The car is still under BMW warranty but there is no check engine light so I think its going to be a battle to get the dealer to diagnose and fix the issue.
This problem (coincidently?) started after Crevier BMW replaced the spark plugs, oil, etc. during a routine service.
After a warm start only (usually after the car has been sitting for 45 minutes but could be as little as a couple minutes to maybe an hour and a half) the car will begin idling normally at around 600 RPM and then the idle will violently fluctuate 3-4 times between 400 - 1000 RPM. The car is a DCT and sometimes it will idle fine for several seconds in neutral but as soon as I put it into reverse the idle will begin surging.
Any ideas?
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Just had this EXACT same thing happen to me three weeks ago. Only difference, is my car is a 6MT. Idle would go back and forth between 500 and 1100. Took it to the dealer, and they replaced the Idle Actuator:
Idle regulating valve Permanent malfunction
1 13-62-7-838-085 ACTUATOR:136099
1341550 Replacing idle actuator (after vehicle diagnosis)
FC: 1341011500
Was completely covered under warranty. Take her in!