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2004 Chevrolet Classic 2.2L Poor Idle Quality, Hesitation
Posted to GM Driveability on 6/18/2009 9 Replies

I think this ecotec has jumped time. It idles a little rough and has sluggish acceleration. No codes at all. Fuel trims are normal at idle and go way negative under load (o2's pegged rich) Thought it was classic signs of a clogged cat but backpressure seems no...

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car Vehicle Data

2004 Chevrolet Classic

VIN 1G1ND52F74
Engine2.2 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation
OccursAlways
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Classic

VIN 1G1ND52F74
Engine2.2 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation
OccursAlways