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High idle no radiator fan

Tiny
CARDUMMYLEARNING
  • MEMBER
  • 1993 FORD TEMPO
  • 142,000 MILES
Check engine light works when key switched on. No trouble code, check engine doesn't light when operating car. Real high idle at cold start, slows down some after running a few minutes, but still too high. Car will run 40 without touching gas. No power to fan when car heats up or when switching on defroster. I do get the everything ok code key on engine mkmoff.
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Thursday, January 12th, 2012 AT 11:24 PM

6 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Suspect bad IAC
also check for vacuum leaks
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Friday, January 13th, 2012 AT 12:13 AM
Tiny
CARDUMMYLEARNING
  • MEMBER
  • 4 POSTS
Would that also affect power to radiator fan
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Friday, January 13th, 2012 AT 12:23 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
If no power to the fan and engine running hot
check fuses, relays, wiring and coolant sensor
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Friday, January 13th, 2012 AT 12:31 AM
Tiny
CARDUMMYLEARNING
  • MEMBER
  • 4 POSTS
Can you tell me what the control voltage from computer to the relay box fan relay should be and what color wire or which pin its on? Also I only see one temperature sensor mounted on the thermostat housing. The temp gauge in the dash works. Is there another temp sensor on the engine or is that the one the computer uses for idle control and fan operation?
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Friday, January 13th, 2012 AT 12:41 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
What do you have for engine size
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Friday, January 13th, 2012 AT 12:45 AM
Tiny
CARDUMMYLEARNING
  • MEMBER
  • 4 POSTS
The engine is a 2.3 four cylinder and the car is automatic w/ac.
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Friday, January 13th, 2012 AT 1:46 AM

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