Saying overheating but is it

Hi,

What needs done first is to confirm it is overheating. What I use is a thermometer (infrared) type where I simply point at the item to be tested. When this happens, do you ever notice steam from the engine, a boiling sound, or coolant coming from the system? Does this only happen when you are in stop and go traffic? Are the cooling fans turning on?

If there isn't anything that indicates a problem, then suspect the engine coolant temperature sensor is bad.

Let me know as many specifics you can think of.

Take care,
Joe

What I would do then is to get a thermometer that is made to check the actual temperature of something without touching it. I use an infrared type which I simply point at the item to be checked and it tells me the temperature. In this case, I would point it at the upper radiator hose to see the temperature.

That is what I would suggest. If it is not overheating when it indicates it is, replace the engine coolant temperature sensor.

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If you find it is bad, here are the directions for replacement. The attached pics correlate with the directions.
2000 Subaru Forester L F4-2.5L SOHC
Removal and Installation
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Coolant Temperature Sensor/Switch (For Computer) Service and Repair Procedures Removal and Installation
REMOVAL AND INSTALLATION

pic 1

1. Disconnect battery ground cable.

Pic 2

2. Remove air intake duct and air cleaner assembly.

Pic 3

3. Disconnect connector from engine coolant temperature sensor.
4. Remove engine coolant temperature sensor.

Pic 4

5. Installation is in the reverse order of removal.

Tightening torque:
25 ± 3 N.M (2.5 ± 0.3 kg.M, 18.1 ± 2.2 ft. Lb)

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Let me know what you find.

Joe