Fan operates continuosly

[85MustGT]

Where is the Coolant temperature sensor?
What is the CCRM?

 

[Kilgore Trout]

The constant control relay module (CCRM) activates the cooling fan motor when coolant or engine reach a specified temperature

 

[Kilgore Trout]

Ok, according to the Haynes manual the 4.6 SOHC location for ECT sensor is the front of the intake manifold. There are two one threaded in on the left and one on the right.
The one on the left is coolant temp sending unit for the dash guage and the one on the right is the coolant temp sensor for the computer.

 

[85MustGT]

Which one and how do you unclip it without breaking the connector?


View attachment 494857

 

[CanadaStang]

Check the connector on the Engine coolent temperature sensor [the one on the right {driver's side}] If it seems fine test the sensor. You can do this with an Ohm meter. With the engine cold disconnect the wiring harness connector from the sensor and check the resistance between the two terminals, it should be about 58k ohms or so, then plug in the connector and start the car and let it warm up to operating temp, shut it off and test the resistance again, this time it should read about 2k ohms or so. If not, replace the sensor.

 

[85MustGT]

will do!

 

[CanadaStang]

will do!

Let us know how you make out.