1994 Ford Explorer runs ruf backfires when idling die when

1994 FORD EXPLORER
177,789 MILES • 6 CYL • 2WD • AUTOMATIC
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JAMES85
  • MEMBER
  • 2 POSTS
engine runs ruf & backfires. when idling if you put in drive it gets rufer and dies
Aug 1, 2010 at 4:53 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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.
Aug 1, 2010 at 8:38 PM
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