2001 Ford Mustang Running roughly at times

Tiny
RUSSELLCHARLENE
  • MEMBER
  • 2001 FORD MUSTANG
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 58,000 MILES
Car runs fine, then all of a sudden it starts to miss for about 10 to 15 seconds then it will start to run fine again. It doesn't do this all the time, just every now and then. It does this while driving, and while it sits still. We have installed a new battery, new spark plugs, plug wires, and coil pack. The check engine light was on at one time. We replaced some things as mentioned above. Check engine light reset. Has not came back on. However, the car still misses at times.
Friday, March 12th, 2010 AT 10:42 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following-Inspect and test 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.
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Friday, March 12th, 2010 AT 10:52 PM

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