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Coolant temperature sensor location for replacement?

Tiny
SHADETREE64TH
  • MEMBER
  • 3 POSTS
  • 1992 FORD F-150
The temperature gauge on the dash recently stop working. I want to replace the coolant temperature sensor thinking this might fix it?
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Thursday, May 6th, 2021 AT 6:58 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
It does sounds like the coolant temperature sensor is bad here is a guide to show you what you are in for when doing the job and I have the coolant sensor locations below.

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Here is the coolant sensor location

Check out the diagrams (Below)

Please let us know what you find.

Cheers, Ken
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Thursday, May 6th, 2021 AT 6:58 PM (Merged)
Tiny
HARLEYCHARLEY
  • MEMBER
  • 5 POSTS
  • 1988 FORD F-150
  • 1,666 MILES
Where exactly is the heat sensor located at on the 5.0 302 engine. Also, what if anything can cause it to seem to never register a temperature when start. Is there anything else that can cause it to not show movement while running or after it has been driven for a long period of time? Please give me all items that can benefit stronger acceleration or at least to what it should be. Thank you very much.
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Thursday, May 6th, 2021 AT 6:59 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You must be talking about the engine coolant temperature sensor located on right front side of intake manifold.
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Thursday, May 6th, 2021 AT 6:59 PM (Merged)
Tiny
HARLEYCHARLEY
  • MEMBER
  • 5 POSTS
Thank you brother, truly appreciate your time and the picture that shows me so much.
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Thursday, May 6th, 2021 AT 6:59 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You are welcome and thank you for using 2carpros. Good Luck
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Thursday, May 6th, 2021 AT 6:59 PM (Merged)
Tiny
BAGGY
  • MEMBER
  • 2 POSTS
Having a hard time finding the ECT sensor on my truck. The engine is a 351w (5.8L) from a 1989 F150. Do I need to remove the throttle body to access it? Thank you, and sorry if I'm asking a question that has already been answered.
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Saturday, June 5th, 2021 AT 4:07 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

No, you can access it under the throttle body.

I enlarged a picture for you to view of the location. Release the tab holding the connector to the sensor. Then you will need a 19mm deep socket to attach to the sensor. Then you can remove it.

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

I would drain some coolant from the radiator so you do not leak a lot when you remove the old sensor.

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Roy
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Saturday, June 5th, 2021 AT 4:33 PM
Tiny
BAGGY
  • MEMBER
  • 2 POSTS
Thank you, Roy! Much appreciated. To be clear, I'm looking for the sensor that communicates with the PCM (computer), not the gauge on the dash. Seems that's the one in the picture, just want to be certain. Thanks again!
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Saturday, June 5th, 2021 AT 4:40 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
That is the correct one for the ECM. It is a thermistor that sends a varying voltage to the ECM and that is what the ECM bases the fuel mapping.

Roy
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Saturday, June 5th, 2021 AT 4:57 PM

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