I can't tell you if it's the mass airflow sensor or not, but I replaced mine, and Fastlane sells them for about $240 or so. Much cheaper than the dealer.

I'm telling you, you should check with Phil at Fastlane before you order any parts from the dealer.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".