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1997 Chevrolet Blazer 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 2/1/2005 11 Replies

the engine show constent misfire on cyl. #3 has 150 compression has good spark have replaced fuel pressure reg. and return fuel line when truck came in it had 75# fuel pressure not sure how long customer drove like that replaceing return line fix high fuel pre...

11 Replies Received (View Replies)

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car Vehicle Data

1997 Chevrolet Blazer

VIN 1GNDT13WOV
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CSFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0151Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage
P0300Multiple Misfire Detected
Message Closed

car Vehicle Data

1997 Chevrolet Blazer

VIN 1GNDT13WOV
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / CSFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways

Trouble Codes

P0131Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage
P0151Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage
P0300Multiple Misfire Detected