1994 Chevy Silverado hestitation

1994 CHEVROLET SILVERADO
84,000 MILES • V8 • 4WD • AUTOMATIC
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TONYFLORES
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  • 1 POST
after my truck warms up or drives over 5 miles there's a hard hesitation like its starving for fuel or too much fuel when i step on the gas pedal in overdrive but when i let off on the gas and cruise it seems fine but when i just push down it starts to stumble but if i put in 3rd it seemed to go away but today when i was driving it it was stumbling in all gears now. I replaced the fuel filter about a month ago and the problem seemed to go away but now it started again. My haynes repair book says its acouple of things timing is one of them or the injectors might be dirty and need to be cleaned or the fuel pump is going bad any help would be great thank you for your time Tony
Nov 6, 2010 at 11:59 AM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it
Nov 6, 2010 at 12:04 PM