Mercedes-Benz C-Class:

Car putts when idling

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# 1  1/18/2012 1:39 AM

New member
Registered: 1/18/2012
Posts: 1

Car putts when idling

Year/make/model:1995 Mercedes-Benz C220

I have noticed within the last week that when I am at a red light, my car will putt and shake a little as if wants to cut off. The putt is very subtle but will shake the car a little.  Any suggestions as to what this may be?



# 2  1/18/2012 1:11 PM

Registered: 11/24/2009
Posts: 1301

Re: Car putts when idling

There is a service bulletin on this condition. The service bulletin is DDAF07-07-U-6700AV, it states the malfunction of the hot film mass air flow sensor and possible air intake malfunctions like air cleaner gaskets and hoses.

There also could be and ignition problem that would need to be checked out by your local automotive professional or Mercedes dealership.

After an inspection of the air intake system and ignition system and they both check out to function properly then you would need to replace the hot film mass air flow sensor.
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