Question about 2002 Chevrolet Impala

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2005 Impala 30,000 miles smooth idle but engine runs rough

Accellerating but not all the time. just under pressure but not everytime.

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A quick fairly easy thing to check is your mass air flow sensor. It can be cleande with a Q tip and carb cleaner. They tend to collect gunk and don't work as well as they should causing similar problems.The small wires that need to be cleaned are somewhat delicate so be careful.
If this dosent help, at least you know that's not the problem!

Posted on Mar 04, 2009

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