× 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
2001 Chevrolet Express 2500 4.3L Misfire, MIL Lamp on
Posted to GM Driveability on 3/20/2012 11 Replies

Van seems to run fine but sets missfire moinitors for #1&4 cyls. No missfire at idle but starts at about 1500 to about 2600 rpm. Does'nt show missfire under hard accel or idle just steady cruise. We reset cam retard from -10 to 0 which got rid of p1345 but mis...

11 Replies Received (View Replies)

  Related Documents & Media  2001 Chevrolet Express 2500

 
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 2500

VIN 1GCFG25W01
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Cruise, Starts at 1500 RPM
Misc.New Motor 20K

Trouble Codes

P0300Multiple Misfire Detected
P1345Mass Airflow Sensor Loose Contact With Low Frequency
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 2500

VIN 1GCFG25W01
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursAlways, Cruise, Starts at 1500 RPM
Misc.New Motor 20K

Trouble Codes

P0300Multiple Misfire Detected
P1345Mass Airflow Sensor Loose Contact With Low Frequency