Coolant temperature sensor
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Joined: Feb 2004
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Coolant temperature sensor
I have a 92 f150 with a 4.9. The temp. gauge always reads too cold and I changed the thermostat without any differance. I suspect that the coolant temperture sender is bad on the side of the block and am planning on changing it. However I check the resistance on the coolant temperature sensor (the one by the thermostat) and am getting no resistance at all between the two pins.
Does anyone know if I am doing this test right? There are two pins on the sensor and am not sure if I am suppose to check betweent the two or from one to ground. Thanks
Does anyone know if I am doing this test right? There are two pins on the sensor and am not sure if I am suppose to check betweent the two or from one to ground. Thanks
Fleet Owner
Joined: Oct 2005
Posts: 20,783
Likes: 1,748
From: Kentucky
The sensor on the front of the engine is the Engine Coolant Temperature sensor (ECT) for the PCM. It should measure between ~500 to 115k Ohms between the two pins.
For reference: Ford Fuel Injection » Engine Coolant Temperature Sensor (ECT)
For reference: Ford Fuel Injection » Engine Coolant Temperature Sensor (ECT)
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