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1998 Chevrolet Blazer 4.3L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on
Truck came in codes PO171, PO131,PO300, PO1870, and running rough. Found bank 1 sensor 1 dead and all plugs on that bank black. Replaced HO2S and did a major tune-up truck ran great. Came back 1 week later HO2 sensor dead again and plugs fouled. Replaced HO2S ...
FIX posted 12/20/2005
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Related Documents & Media | VIN | 1GNT13W4W2 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, Misfire, Poor Fuel Economy, MIL Lamp On |
Trouble Codes
| P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
| P0171 | Fuel System Too Lean (Bank 1) |
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
1998 Chevrolet Blazer
| VIN | 1GNT13W4W2 |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, Misfire, Poor Fuel Economy, MIL Lamp On |
Trouble Codes
| P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
| P0171 | Fuel System Too Lean (Bank 1) |
| P0300 | Multiple Misfire Detected |
Video