Engine coolant over temperature light will not go off

2014 FORD FUSION
74,800 MILES • 1.5L • 4 CYL • AUTOMATIC
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SKIZZEE30
  • MEMBER
  • 1 POST
It comes on in the "on" position. My car never overheated and still does not. I have had the thermostat housing and sensor changed and it does the same thing. Because of the light it has disabled my speed and air. The car runs idle but that’s it. I have tried several methods to reset the computer. Any help will do.
Aug 24, 2019 at 4:40 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,548 POSTS
Hello,

This is common when the A/C system is slightly overcharged the computer is alerted via the high pressure sensor and the warning given. can you try to drive it with the A/C off to see if it does the same thing? Here is a guide that shows the pressures and how to test them:

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please run down this guide and report back.
Aug 26, 2019 at 7:47 AM
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AARON118
  • MEMBER
  • 3 POSTS
Where did you find the thermostat at?
Dec 6, 2021 at 8:54 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi Aaron,

AS far as the thermostat, is it for the same year, make, and model listed above?

Let me know. Also, confirm the engine size.

Take care,

Joe
Dec 8, 2021 at 11:47 AM
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