1991 Chevy S-10 hesitation

Tiny
CHRISGRIFFIN
  • MEMBER
  • 1991 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 139,000 MILES
The truck is stalling and hesitating. It revs up even when I am not on the accelerator.
Saturday, August 14th, 2010 AT 6:46 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position 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.
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Saturday, August 14th, 2010 AT 7:19 PM

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