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1994 Ford Explorer help unknown problem

Tiny
CRHOADS85
  • MEMBER
  • 1994 FORD EXPLORER
Engine Mechanical problem
1994 Ford Explorer 6 cyl Two Wheel Drive Automatic

94 ford explorer runns rough dies when idling and black smoke comes from exhaust. Idle control sensor has been done fuel pressure regulator has been replaced as the case with the egr valve any other ideas of what it may be?
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Saturday, July 10th, 2010 AT 7:42 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1. Fuel pressure not within specs. Can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
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Sunday, July 11th, 2010 AT 2:42 AM

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