I just found this thread.

My E420 will also occasionally surge in rpm's. Mostly when almost comming to a full stop, it will surge for about 1 second.

Could that be the mass air sensor?

Craig

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1994 E420, Pearl Black/Black. 2.82 rear diff., AMG front spoiler, painted lower half. SOLD

1972 & 1974 BMW 2002tii's.