× 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
1999 Chevrolet Monte Carlo LS 3.1L Misfire
Posted to GM Driveability on 6/4/2003 17 Replies

The customer reports a misfire, check engine light comes on but before she can get it to my shop it is running good and light is out. I can never duplicate it but history code shows P0300 with most missfires on #3 and a few on others. I replaced the wires and ...

17 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Monte Carlo LS

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Monte Carlo LS

VIN 2G1WW12M7X
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCold, Intermittently

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Monte Carlo LS

VIN 2G1WW12M7X
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCold, Intermittently

Trouble Codes

P0300Multiple Misfire Detected