1996 Ford Contour jerking

1996 FORD CONTOUR
135,000 MILES • 4 CYL • 2WD • AUTOMATIC
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SHENHAI@HOTMAIL.COM
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After the car reachs normal temperature, it start jerking or buck. Pushing accelerator would not get power, but increase noise. This symptom lasts about 1 to 2 min. Then the car run good. Check engine light is not on. What is the potential problem? Thanks.
Sep 19, 2010 at 11:39 AM
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RASMATAZ
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Lack of acceleration,chugging,hesitating,jerking,bogging,misfiring etc. 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.
Sep 19, 2010 at 10:45 PM