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2003 Chevrolet Impala 3.4L Misfire
Posted to GM Driveability on 4/25/2008 20 Replies

This Impala runs very good since the convertor was replaced but the fuel trim numbers at idle are: long term-14 and short term -2 to -6. According to the scan tool it misfires on deceleration for just a second. It does this every time if you rev the engine whi...

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  Related Documents & Media  2003 Chevrolet Impala

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Impala

VIN 2G1WF52EX3
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursOn Decel, Idle
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Impala

VIN 2G1WF52EX3
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursOn Decel, Idle