Need help asap

Tiny
JGARCIA93
  • MEMBER
  • 2003 FORD FIVE HUNDRED
  • 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?
Tuesday, April 5th, 2011 AT 11:17 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Tuesday, June 21st, 2011 AT 10:14 AM

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