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1990 Pontiac Sunbird LE 2.0L Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 11/24/1999

We are looking at two problems on this car. First, #3 cylinder has a dead misfire which seems to defy diagnosis. Second is a code 45 rich indication with a fixed high O2 (above 900 mV) and a very low integrator (70).

In attempting to diagnose the misfire, we...

  Related Documents & Media  1990 Pontiac Sunbird LE

 
Message Closed w/FIX

car Vehicle Data

1990 Pontiac Sunbird LE

VIN 1G2JB14K6L
Engine2.0 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsOBD I
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

45Rich Indication
Message Closed w/FIX

car Vehicle Data

1990 Pontiac Sunbird LE

VIN 1G2JB14K6L
Engine2.0 L / 4 cyl / GAS
Trans3-speed Automatic
DeliveryFI / TBI
EmissionsOBD I
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

45Rich Indication