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2005 Chevrolet Impala 3.8L Excessive Emissions
Posted to GM Driveability on 1/21/2008 6 Replies

Hello and thanks in advance for input

I basically need some ideas for further testing or may be some direction. This vehicle will intermittenly have the fuel trims go negative. Typically it is just the LTFT but sometimes the STFT will also be negative. The c...

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  Related Documents & Media  2005 Chevrolet Impala

 
Message Closed w/Summary

car Vehicle Data

2005 Chevrolet Impala

VIN [No VIN Available]
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIntermittently
Message Closed w/Summary

car Vehicle Data

2005 Chevrolet Impala

VIN [No VIN Available]
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursIntermittently