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2003 Chevrolet Astro 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 8/7/2018 17 Replies

Check engine light blinking on excel, engine is not missing, missfire data shows cyl 2&5 most of the time or 1&4 and some times random cylinder but 2&5 both climb most of the time. New engine all tune up stuff new, tried new distributor, crank sensor, have...

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car Vehicle Data

2003 Chevrolet Astro

VIN 1GCDL19X73
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / spider injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, on Accel
Misc.Not Sure if Mileage Is Correct, Just Installed Jasper Engine

Trouble Codes

P0300Multiple Misfire Detected
Open Help Request

car Vehicle Data

2003 Chevrolet Astro

VIN 1GCDL19X73
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / spider injection
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursHot, on Accel
Misc.Not Sure if Mileage Is Correct, Just Installed Jasper Engine

Trouble Codes

P0300Multiple Misfire Detected