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2003 Chevy Malibu Engine Vibrations/hesitation at idle

Tiny
JCROWDER21
  • MEMBER
  • 2003 CHEVROLET MALIBU
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 105,000 MILES
I just received a tune-up in which I replaced the spark plugs, serpetine belt, fuel filter, upper and lower radiator hoses and pcv valve. The car ran like a top before this work was done. The engine now noticeably vibrates when in drive and not moving. It is fine in park and after I accelerate. The mechanic mentioned that the new belt may be too tight and I might need a tensioner and that should solve the problem. Is he correct.I really don't want to have to pay for a diagnostic test if this will fix the problem.
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Thursday, July 2nd, 2009 AT 2:24 PM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Not a chance in hell.

Items were:
spark plugs, serpetine belt, fuel filter, upper and lower radiator hoses and pcv valve.

Spark plugs and pcv valve are the only possible items that I can imagine.

Plugs are the one to focus on, sounds like a miss. Wires might have been damaged in the process. Probably not his fault, they can be difficult.

Check the codes.
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Thursday, July 2nd, 2009 AT 7:48 PM

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