Overheating issue

2012 FORD ESCAPE
227,000 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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RANGERBOON
  • MEMBER
  • 1 POST
I am currently experiencing an overheating issue with temperature gauge going up high and into the red on occasion. We just finished up replacing the thermostat on it but it is still going into the red upon driving a couple blocks. I am curious if it may be either a water pump issue or CHT sensor issue or maybe something else? Just trying to narrow it down so I am not throwing money at something that is fine. Thanks!
Feb 20, 2021 at 4:27 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

I have to start by asking if the engine is truly overheating or does it seem to be just the gauge in the vehicle?

As far as the water pump, try this. When the engine is cold, remove the radiator cap so you can see the coolant. Start the engine and allow it to reach operating temp. Once that happens, you should be able to see the coolant flowing through the system.

As far as testing the CHT, you will need to unplug it and check resistance. If you look at pic 1, it shows the resistance that should be found based on temp.

If the sensor is bad, here are the directions for replacing it. The attached pics correlate with the directions.

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2012 Ford Truck Escape 2WD L4-2.5L
Cylinder Head Temperature (CHT) Sensor
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Engine Temperature Sensor Service and Repair Removal and Replacement Cylinder Head Temperature (CHT) Sensor
CYLINDER HEAD TEMPERATURE (CHT) SENSOR
Cylinder Head Temperature (CHT) Sensor


pic 2



pic 3


Removal and Installation

1. Detach the Cylinder Head Temperature (CHT) sensor cover and position aside.

2. Disconnect the CHT (Cylinder Head Temperature) sensor electrical connector.

3. Remove the CHT (Cylinder Head Temperature) sensor.
- To install, tighten to 12 Nm (106 lb-in).

4. To install, reverse the removal procedure.

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Let me know if this helps or if you have other questions.

Take care and God Bless,

Joe
Feb 21, 2021 at 4:52 PM
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