what would cause a 1999 Chevy C3500 with the 5.7 engine to fluctuate rpm between 50 and 60 miles an hour backfire and almost stall? I've gone as far as replacing the fuel pump with a new.

what would cause a 1999 Chevy C3500 with the 5.7 engine to fluctuate rpm between 50 and 60 miles an hour backfire and almost stall? I've gone as far as replacing the fuel pump with a new. 2 Answers

what would cause the exzaust manifolds to glow bright red its got a 454 in it with throttle body fuel injection 1 Answer

the truck does not have converters on it and it has a y pipe with single outlet also dont know if it matters but the truck is an ex emergency vechile

I have a 1989 Chevy 1 ton c3500. The fudge tells me it's getting hot but it doesn't run like it's hot. I've had the radiator rodded and the gauge says it's getting hot still. 4 Answers

I took the thermostat out to see if I had flow in the radiator and I do. I put a kitchen thermometer in the radiator with it running and it said 180. Could I be getting a false reading?

I have a 97 chevy 3500 put a motor in and will not start changed the fuel pump fuel filter and also the spidar injectors also the computer can anyone help 1 Answer

I have a 97 chevy 3500 put a motor in and will not start changed the fuel pump fuel filter and also the spider injectors also the computer can anyone help I can pour fuel into the throttle body and it...

1998 chevy 3500 5.7 not getting fuel 3 Answers

Have a 1998 chevy 3500 with a 5.7 not getting fuel put new fuel pump in it and filter. But want start if I poor fuel down the butterfly it will run for a second then shut off.