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2002 Chevrolet Astro 4.3L Poor Idle Quality, Misfire, MIL Lamp on
Posted to GM Driveability on 2/16/2015 26 Replies

Ok so this thing has a dead missfire on cylinder 4 at idle according to my scanner. You can watch the missfire counter for #4 run up like its not firing at all. I've replaced the #4 injector, swapped plugs and wires, checked compression( which is about 130 on ...

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  Related Documents & Media  2002 Chevrolet Astro

 
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car Vehicle Data

2002 Chevrolet Astro

VIN 1GCDM19X62
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0300Multiple Misfire Detected
P0304Cylinder 4 Misfire Detected
Message Closed

car Vehicle Data

2002 Chevrolet Astro

VIN 1GCDM19X62
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0300Multiple Misfire Detected
P0304Cylinder 4 Misfire Detected