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Discussion Starter · #1 ·
So I get this serge in rpms I replace 02s the maf sensor,new plugs, valve cover gaskets. Intake has been sealed. My airlines all are new Don’t know what’s causing this serge it’s pissing me off any one have had similar that can help a brother out
 

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W210 Section Moderator
1998 E320 base sedan @ 160kmiles
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8,557 Posts
Surges when ? When the engine is cold ? hot ? Both ? What rpm does it surge to ? Does the tach needle fluctuate ?
 
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