× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2002 Chevrolet Impala 3.8L Misfire
Posted to GM Driveability on 10/8/2007 21 Replies

Car was serviced and found to missing. pulled spark plugs and found was worn out. replaced plugs, and road tested. misfire p0300 then p0303. replaced spark plug wires and test drove again. Did some better but under hard acceleration misfiring and and no power....

21 Replies Received (View Replies)

  Related Documents & Media  2002 Chevrolet Impala

 
Message Closed

car Vehicle Data

2002 Chevrolet Impala

VIN 2G1WF55K52
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, on Accel
Misc.Police Package Car

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0303Cylinder 3 Misfire Detected
Message Closed

car Vehicle Data

2002 Chevrolet Impala

VIN 2G1WF55K52
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, on Accel
Misc.Police Package Car

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0303Cylinder 3 Misfire Detected