Common questions

How do you replace a water temperature sensor?

How do you replace a water temperature sensor?

Instructions 1. Remove the old sensor wires from the plug at the circuit board. Picture below shows a LCD sytem sensor harness. LED sytems plugs are different in apperance, but the wires come out the same way. 2. Connect the new sensor and toss it over the top of the spa into the water, 3.

How to test an engine coolant temperature sensor?

Repair Topics > Computers and Sensors > Test engine coolant temperatu… An engine coolant temperature sensor is usually a variable resistor that changes resistance and thus voltage as the coolant temperature changes. To test the sensor, you can remove the electrical connector and check the resistance value of the sensor and compare it to specs.

Do you have to replace coolant sensor when replacing CT sensor?

If you have decided to replace the CT sensor and your car’s service schedule is coming up, you might want to replace the coolant in the system as well, since you have to remove some of the coolant.

What should I do if my coolant sensor is leaking?

Depending on your particular application, install a new sealing washer, or apply a light coat of an approved sealer, or wrap Teflon tape around the threads of the new sensor (give it a couple of turns). This will keep coolant from leaking. Consult your car repair manual, if necessary.

How to replace Waterpump, thermostat and coolant temp sensor?

In this walkthru I show how to replace a waterpump, thermostat and a coolant temp sensor in a jeep grand cherokee. This 3.7L engine is found in many Chrysler Dodge Jeep vehicles such as the Nitro, Liberty, 300 and others. Goodies include a belt routing diagram and how to bleed the air from the coolant. Loading…

What’s the name of the coolant temperature sensor?

Coolant temperature sensors are also known as engine coolant temperature sensors or ECT sensors. The principle working of this sensor involves the use of an electrical resistance which measures the temperature of the coolant.

How can I tell if my coolant temperature sensor is not working?

Check the warm sensor in your engine. You should see a much lower reading on the ohm meter. If not, then it is not working correctly. Replacing the coolant temperature sensor is an easy process that anyone can do at home with some basic mechanic’s tools.

How much does it cost to replace a coolant temperature sensor?

Unscrew the ECT sensor in an anticlockwise direction, similar to how a spark plug is removed. Install the new sensor and reconnect the connector cable. The average replacement cost of the Coolant Temperature Sensor is between $100 and $220. The labour cost is between $40 and $140 while the part itself costs between $50 and $80.

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Ruth Doyle