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1997 Pontiac Sunfire stuttering acceleration

Tiny
DRKO0404
  • MEMBER
  • 1997 PONTIAC SUNFIRE
  • 4 CYL
  • 2WD
  • MANUAL
  • 115,000 MILES
My 1997 pontiac sunfire often jerks/chokes after shifting gears and applying a heavy gas peddle for needed quick acceleration, when I apply the gas peddle lightly and slow it is fine. Excellent shape otherwise, what kind of problem would this be.
Friday, May 28th, 2010 AT 11:46 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 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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Friday, May 28th, 2010 AT 11:49 PM

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