2003 Ford Expedition temp gauge movement

Tiny
JANDY
  • MEMBER
  • 2003 FORD EXPEDITION
  • V8
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
Started having problems with the temp gauge moving from normal operating range to top of heat range after the suv had been operated and shut off for a few minutes. The gauge would go back down to normal after the suv was started. Recently the gauge spiked to the hot range, which started the engine to reduce power. I replaced the cyc head temp unit and the themostat. It seems to work ok now, except that the gauge still spikes up alittle bit over normal when the suv has been ran and parked. The gauge goes back to normal when the suv is started. Please let me know if you have experienced any problems like this one and what was the fix.
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Friday, May 7th, 2010 AT 11:43 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,005 POSTS
Have you checked the wiring for corrosion or damage?
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Friday, May 7th, 2010 AT 11:52 AM
Tiny
JANDY
  • MEMBER
  • 2 POSTS
The wiring look good. This started about a year ago/off and on. Then one month ago it was spiking all the time. Thanks for your help.
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Friday, May 7th, 2010 AT 12:25 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,005 POSTS
Since you already replaced the sensor, my only other suggestion would be the body control module. That would need checked by a tech with the proper test equipment.
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Friday, May 7th, 2010 AT 1:44 PM

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