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1997 Pontiac Grand Prix SE 3.1L Poor Fuel Economy
Posted to GM Driveability on 1/12/2009 14 Replies

Thanks in advance. This pontiac is kicking my techs butt. At idle and on decel with throttle plate closed the Ltft is -15 at idle and at decel with throttle plate closed. Unhooked evap system, replace oxygen sensor, tested egr and replace it known good valve, ...

14 Replies Received (View Replies)

  Related Documents & Media  1997 Pontiac Grand Prix SE

 
Message Closed w/Summary

car Vehicle Data

1997 Pontiac Grand Prix SE

VIN 1G2WJ52M4V
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursIdle
Message Closed w/Summary

car Vehicle Data

1997 Pontiac Grand Prix SE

VIN 1G2WJ52M4V
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursIdle