× 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
1998 GMC Savana 2500 4.3L Misfire
Posted to GM Driveability on 2/8/2010 15 Replies

Help this makes no sense everything appears to be there for this to run right but it wont. loosing hair fast. Misfire on 5 and 6 cyl constant at idle seeems to clear up a little at higher rpms. Replaced intake gasket and updated injector assy to newer style ef...

15 Replies Received (View Replies)

  Related Documents & Media  1998 GMC Savana 2500

 
Message Closed

car Vehicle Data

1998 GMC Savana 2500

VIN 1GTFG25W7W
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways
Misc.Cargo Van

Trouble Codes

P0300Multiple Misfire Detected
P0306Cylinder 6 Misfire Detected
Message Closed

car Vehicle Data

1998 GMC Savana 2500

VIN 1GTFG25W7W
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire
OccursAlways
Misc.Cargo Van

Trouble Codes

P0300Multiple Misfire Detected
P0306Cylinder 6 Misfire Detected