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1988 Pontiac Grand Am 2.5L MIL Lamp on
Posted to GM Driveability on 2/15/1998

Car arrived MIL on, running good. Ran Scan(MT2500) got lots of codes and real strange data. Replaced ECM, no change. New PROM, same results. Two ECMs later, readings still very improbable, car runs great. readings are as follows O2 stuck at 273, open loop. in ...

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Message Closed w/FIX

car Vehicle Data

1988 Pontiac Grand Am

VIN 1G2NE14U4J
Engine2.5 L / 4 cyl
EmissionsFederal
SymptomsMIL Lamp On
OccursAlways
Misc.ECM #1227748
Message Closed w/FIX

car Vehicle Data

1988 Pontiac Grand Am

VIN 1G2NE14U4J
Engine2.5 L / 4 cyl
EmissionsFederal
SymptomsMIL Lamp On
OccursAlways
Misc.ECM #1227748