What sensor turns on the radiator fan?

What sensor turns on the radiator fan?

The engine coolant sensor or a separate engine temperature switch, is used to monitor engine temperature. So, extra cooling is not needed, when a cold engine is first started. As a result, the engine cooling fan, does not come on until the engine reaches, normal operating temperature.

Where is the thermo coolant fan switch located?

Locate the cooling fan switch near the thermostat housing on the left side of engine behind the distributor assembly. The switch wire colors should be green and black.

How can you tell if a fan relay is bad?

One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.

What happens when the coolant temperature sensor goes bad?

If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. This will cause the computer to think the engine is cold, even when it is not, and as a result will use more fuel than necessary.

How do I know if my fan switch is bad?

The best way to tell if your cooling switch is faulty is to listen to your engine while you drive. You know how your engine is supposed to sound, and if you notice that you don’t hear the fan as often as you normally do during your afternoon commute, you might have a failing switch.

Where is the connector on a Cavalier radiator fan?

Inspect the fuse in the fuse relay box. Start the engine and pull the connector off the ECT. This is a two-wire connector with a yellow and a black wire. It is located near the coolant outlet on the upper rear of the hose. When the connector is pulled off of the ECT, within a second or two the fan should come on.

Where is the ECT on a Cavalier radiator?

It is located near the coolant outlet on the upper rear of the hose. When the connector is pulled off of the ECT, within a second or two the fan should come on. If it does come on, the ECT is suspect. Check the voltage with the meter by backprobing the sensor when the engine warms up.

Why is my radiator fan not coming on?

When the connector is pulled off of the ECT, within a second or two the fan should come on. If it does come on, the ECT is suspect. Check the voltage with the meter by backprobing the sensor when the engine warms up.