1994 Ford F150 MISSES

1994 FORD F-150
40,000 MILES • 6 CYL • 2WD • AUTOMATIC
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D.D.
  • MEMBER
  • 1 POST
NEW ENGINE, MISSESAT IDLE ,&OCCASIONALLY CUTS OUT FOR A SPLIT SECOND AT HI SPEED, GETTING WORSE & CODES ERASE BEFORE i CAN GET TO A SCANNER,RESCENT TUNEUP,NEW DISTRIBUTOR, EGR VAL. THROTTLE P. SENSOR,,O2SENSOR (OLD ENGINE WITH 397000ACTUAL MILES, MISSED OCASIONALLY AT IDLE ONLY!)ANY IDEAS?
Jul 27, 2010 at 6:30 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine running rough or misfiring can be cause by the following:

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
12.Engine compression problem
Jul 27, 2010 at 6:38 PM
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