× 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 GMC Savana 3500 5.7L Poor Idle Quality, Misfire
Posted to GM Driveability on 2/8/2011 14 Replies

This van came in running bad at idle. Code for O2 relpaced all due to the milage. Still runs very rich all fuel trims are way -. Runs ok off idle. maf at idle [...]. map sensor is 26 at idle but this thing is barely running at idle. egr is 0%.The inj tubes are...

14 Replies Received (View Replies)

  Related Documents & Media  1999 GMC Savana 3500

 
Message Closed w/FIX

car Vehicle Data

1999 GMC Savana 3500

VIN 1GTHG39R7X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle
Message Closed w/FIX

car Vehicle Data

1999 GMC Savana 3500

VIN 1GTHG39R7X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle