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Old 03-11-2011, 09:52 AM
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BigCo540i BigCo540i is offline
The Usual Suspect
Location: Richmond, VA
Join Date: Jul 2007
Posts: 2,713
Mein Auto: 98 E39 540i - 09 E90 328i
Ok... I'm installing the t stat tomorrow morning. If it still has fluctuating idle then maybe maf?? How do you test it?

Yes BMW spec.
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