Mechanics

NEED HELP ASAP

2003 Ford 500 • V8 4WD Automatic • 100,000 miles

My ford f-250 desiel engine starts to buck when I'm doing 50mph. What could be the problem?


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Jgarcia93
April 5, 2011.



Lack of acceleration, chugging, hesitating********, 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.
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 and keep testing.

Rasmataz
Jun 21, 2011.