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1989 Chevrolet T Blazer 4.3L MIL Lamp on
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.
FIX posted 6/24/1998
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Message Closed
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| VIN | 1GNTCT18Z3 |
| Engine | 4.3 L / 6 cyl |
| Emissions | OBDI |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
| Misc. | 4X4 |
Message Closed
Vehicle Data
1989 Chevrolet T Blazer
| VIN | 1GNTCT18Z3 |
| Engine | 4.3 L / 6 cyl |
| Emissions | OBDI |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
| Misc. | 4X4 |