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2002 Chevrolet Impala 3.4L Hesitation
Posted to GM Driveability on 3/25/2011 10 Replies

This bucks like it is hitting a rev limiter and when it does this the spark advance shows over 50 degrees, if I disconnect the EGR valve the problem clears up. I do not see a lean condition and I have checked the MAF and it appears to function properly and whe...

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Message Closed w/FIX

car Vehicle Data

2002 Chevrolet Impala

VIN 2G1WF52E62
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation
OccursOn Accel
Message Closed w/FIX

car Vehicle Data

2002 Chevrolet Impala

VIN 2G1WF52E62
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation
OccursOn Accel