P0117 code

Tiny
JERRYMCGUIRE1357
  • MEMBER
  • 2000 FORD ESCORT
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
I got a p0117 code regarding the ECT sensor and the engine being too hot. I just replaced both the temperature gauge and the ECT sensor (the cooling fan was not turning on). The car stays at 50% of the temperature gauge when idling, but when driving it climbs to about 75% of the gauge, then when idling again is meanders back down to the 50% mark. I just replaced the coolant, the radiator cap is in good shape, and the thermostat looks okay (I will talk about this later).

My question is what the heck is going on here? Am I naive or could the thermostat not be functioning properly and so it is circulating some, but not all, of the coolant? Is the ECT sensor bad (the replacement)?

The car is not running rough or getting poor gas mileage. It is not smoking or showing milky oil in the dipstick. I do not think it is the PCM or the head gasket (I am hoping at least) because of what I described at the beginning of this paragraph. I am at a loss as to what it can be at this point, maybe it is the ECT sensor, but then why is the gauge showing it is running hot? Is it the temperature sensor? Is it both? Help!
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Tuesday, July 12th, 2016 AT 6:49 PM

3 Replies

Tiny
JIS001
  • EXPERT
That code usually to refers to the temperature being too hot for the head. So you should look into a possible faulty thermostat? If the fans do not come on, manually apply power and ground to the fans to see if they come on. If it does not come on then the fan is faulty.
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Tuesday, July 12th, 2016 AT 8:55 PM
Tiny
JERRYMCGUIRE1357
  • MEMBER
JIS001 - The thermostat appears fine, but I will probably replace it just to be sure. The cooling fan was not working but I switched the ECT sensor, and now it kicks on.
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Wednesday, July 13th, 2016 AT 5:39 AM
Tiny
KEN
  • ADMIN
Lets check the radiator both inside and outside, here is a guide on what to look for when the engine is overheating.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Please let us know what you find

Best, Ken

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Sunday, July 17th, 2016 AT 7:37 PM

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