
1999 Chevrolet Express 3500 5.7L Hesitation, Cuts out, Misfire, Poor Fuel Economy, lack of power
vehilce is a 99 g3500 box van 5.7l. it starts and runs and actually idles pretty good, but when trying to accelerate under any condition, whether in gear or not, it stumbles and falls flat on its face. if you feather the throttle you can get it to rev up but i...
FIX posted 1/20/2008
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)27 Replies Received(Hide Replies)27 Replies Received
|
Message Closed
|
VIN | 126FGRFRYX |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / sfi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Cuts Out, Misfire, Poor Fuel Economy, Lack of Power |
Occurs | Cold, Hot, Under Load, on Accel, Idle, Hesitation, Stumble, and Lack of Power Happen at All Times Under Any Condition |
Misc. | Known Good MAP MAF TPS Cmp CKP All Four O2's Fuel Pressure |
Message Closed
Vehicle Data
1999 Chevrolet Express 3500
VIN | 126FGRFRYX |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / sfi |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, Cuts Out, Misfire, Poor Fuel Economy, Lack of Power |
Occurs | Cold, Hot, Under Load, on Accel, Idle, Hesitation, Stumble, and Lack of Power Happen at All Times Under Any Condition |
Misc. | Known Good MAP MAF TPS Cmp CKP All Four O2's Fuel Pressure |