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1998 Chevrolet Blazer 4.3L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 11/14/2005 11 Replies

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 ...

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  Related Documents & Media  1998 Chevrolet Blazer

 
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car Vehicle Data

1998 Chevrolet Blazer

VIN 1GNT13W4W2
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, Poor Fuel Economy, MIL Lamp On

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0171Fuel System Too Lean (Bank 1)
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Blazer

VIN 1GNT13W4W2
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, Poor Fuel Economy, MIL Lamp On

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0171Fuel System Too Lean (Bank 1)
P0300Multiple Misfire Detected