surging at idle and check engine light on? on 2001 Mercedes-Benz E55 AMG

As the car reaches operation temp. from a cold start it suddenly starts to surge and run rough at idle.

by in Lafayette, CA on February 05, 2011
1 answer
ANSWER by on February 05, 2011
Check engine light on? IAC Valve (Idle air control) is a possibility. Volyage should checked and the MAF (Mass Air Meter.) Let me know. Good luck.

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