1997 Ford F-150 rough idle

Tiny
TRICKIED
  • MEMBER
  • 1997 FORD F-150
  • 6 CYL
  • 4WD
  • MANUAL
  • 286,000 MILES
What makes my 97 f150 idle rough and accelerate slugishly
Thursday, September 16th, 2010 AT 12:22 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 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.
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Thursday, September 16th, 2010 AT 12:35 AM

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