× 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
1996 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions
Posted to GM Driveability on 9/26/2006 12 Replies

This one is giving me fits. Original problem was P0300 random misfire only on load. After trying everything I finally replaced all injectors with the GM conversion kit from CSFI to MFI injectors. This fixed the misfire problem. It runs perfect. But.... imedeat...

12 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet K1500 Cheyenne

 
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet K1500 Cheyenne

VIN 1GCEK19M3T
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / MFI Conversion
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet K1500 Cheyenne

VIN 1GCEK19M3T
Engine5.7 L / 8 cyl / GAS
Trans5-speed Standard
DeliveryFI / MFI Conversion
EmissionsOBD-II Compliant
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)