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2003 Chevrolet Impala 3.4L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 7/8/2009 11 Replies

I am trying to help a friend and diagnose his car over the phone cause i wont get a chance to look at it for about a week. He called me about a week ago with misfire, he borrowed a scanner, p0300, he replaced plugs and found one that the ground strap was actua...

11 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Impala

 
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Impala

VIN 2G1WF52EX3
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Impala

VIN 2G1WF52EX3
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected