1999 GMC Suburban engine hesitation

Tiny
WALKER2
  • MEMBER
  • 1999 GMC SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
Why does my engine hesitate and sound like its choking and about to kill when I press gas
Saturday, June 19th, 2010 AT 9:49 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

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, fuel filter 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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Sunday, June 20th, 2010 AT 4:20 AM

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