2002 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on
Blazer came in with check engine light was off and customer stated light comes on at times and sometimes it idle [...] drove blazer and is running [...] codes and got po131,po171,[...] freeze frame and got freeze frame for [...] fuel trims were high on bank 1 ...
FIX posted 4/24/2006
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Message Closed w/FIX
Vehicle Data2002 Chevrolet Blazer LS
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2002 Chevrolet Blazer LS
VIN | 1GNCT18W72 |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Intermittently |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0171 | Fuel System Too Lean (Bank 1) |
P0300 | Multiple Misfire Detected |