1993 Ford Thunderbird rough idle when cold

Tiny
TOUGHER2
  • MEMBER
  • 1993 FORD THUNDERBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 174,000 MILES
Why does my card idle rough only when it's cold?
Thursday, August 26th, 2010 AT 7:58 PM

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, August 26th, 2010 AT 10:41 PM

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