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1993 GMC Yukon 5.7

Tiny
JAYMAN768
  • MEMBER
  • 1993 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 95,678 MILES
RUNS FINE FOR 20 MIN. THEN STARTS TO RUN ROUGH & STALLS WHEN YOU TRY TO RESTART MOTOR SHAKES LIKE THE TIMING IS OFF (KICKS BACK) CHANGED DISTRIBITOR (USED)& CLEANED OUT THE CATALITIC CONVERTOR AFTER 2-3 HR RUNS OK AGAIN ALSO WHEN AT FULL THROTLE RUNS FAST & SLOW LIKE A REV LIMITOR?
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Monday, March 14th, 2011 AT 10:52 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light?

Could be one of the following below -check and test:

Oxygen sensors.
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.
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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Monday, March 14th, 2011 AT 11:03 PM

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