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1989 Chevrolet T Blazer 4.3L MIL Lamp on
Posted to GM Driveability on 3/24/1998

Some Scan data: Block learn 175, Clear flood, O2 sensor .443-.447. When testing O2 with volt meter at both the sensor and at the ECM 02 seams to be ok! The light tipically comes on at 60-63 mph. TPS is reading 1.06-1.36. Any ideas would be a great help.

 
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car Vehicle Data

1989 Chevrolet T Blazer

VIN 1GNTCT18Z3
Engine4.3 L / 6 cyl
EmissionsOBDI
SymptomsMIL Lamp On
OccursCruise
Misc.4X4
Message Closed

car Vehicle Data

1989 Chevrolet T Blazer

VIN 1GNTCT18Z3
Engine4.3 L / 6 cyl
EmissionsOBDI
SymptomsMIL Lamp On
OccursCruise
Misc.4X4