can u please help ?
Asked by TYRELj Aug 13, 2023 at 10:25 AM about the 2001 Chevrolet Silverado 1500HD LS Crew Cab RWD
Question type: Maintenance & Repair
MY 2000 CHEVY RUNS FINE IN THE COOL MORNING THEN WHEN I
START IT IN THE HEAT OF THE EVENING IT STARTS OFF FINE THEN IT
STARTS TO SPIT AN SPUTTER EVEN SOUNDS LIKE BACKFIRING
THROUGH THE BREATHER I GIVE IT GAS AN DIES TURN THE KEY OFF
FOR A MIN THEN AFTER A COUPLE OF TRYS THEN IT WILL GO FOR A
FEW MILES AN THEN THE SMAE THING HAPPENS AGAIN
4 Answers
Sounds like it's starving for fuel. Check your fuel pressure at the fuel rail. Possibly the fuel pump is dying. Hope that helps! Jim
This could be as simple as a loose battery cable, or clogged air or fuel filter. Or more likely, it's leaking injectors that flood the engine, and excess fuel doesn't dissipate until the engine has cooled. Try starting with the accelerator floored; this Wide Open Throttle action clears excess fuel. If this isn't the cause, it could be a defective engine coolant temperature sensor, faulty coils or plug wires, faulty crank or cam position sensors, or faulty EGR valve.
Drive it with a fuel pressure gauge hooked up to it. Check your adaptive fuel PID. Check to see what your O2 sensors are doing.
