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Mercedes Benz `89 300tdt
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39 Posts
Discussion Starter #1
My c180 has an erratic idle. The car runs vel and the spark plugs has an gray(ish) colour.

Is there an idle speed valve or something similar that I can clean\inspect? in case, were can I locate it?


also I have trouble finding the MAF, thought it was where I marked a red area, but here is just a black plastic hose. here is my engine:


here is an video of the idle problem
Suggestions on what I can start with?
 

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Registered
Mercedes Benz `89 300tdt
Joined
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39 Posts
Discussion Starter #2
I`ve now replaced Lamdasensor, but nothing changed.

What else controls idle speed?

Has this sensor something to do with idle speed?
 
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