When should the cooling fan come on?

To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches about 200 to 230 degrees. An electric fan SHOULD NOT run all the time.

How do I know if my cooling fan module is bad?

Symptoms of a Bad or Failing AC Fan Control Module

Cooling fans running for a long time. The cooling fans under the hood of your car are designed to keep the components of the system at a lower temperature.
Cooling fans not running at all.
Weakened air flow.

How do I know if my coolant temperature sensor is bad?

Symptoms of a Bad Coolant Temperature Sensor If your vehicle starts to use a lot more gasoline than usual, or black smoke is starting to come from the exhaust pipe, these are indicators that the coolant temperature sensor in your vehicle could be defective, and needs to be replaced.

What are the signs of a bad temperature sensor?

Symptoms of a bad or failing coolant temperature switch (sensor)

Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy.
Black smoke from engine.
Overheating engine.
Check Engine Light comes on.

Where is the fuse for the engine cooling fan?

The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator.

How is the radiator fan on a Chevy Cavalier controlled?

A radiator cooling fan on a Chevy Cavalier is controlled by the computer. Its circuit goes from the battery positive to the fuse. From the fuse it travels to two relays: the low-speed and the high-speed relay.

Why does my Chevy Cavalier not turn on?

1996 Chevy Cavalier 2.2 lt engine. Today i found, Cooling fan does not turn on even after reaching operating temperature.Engine overheats when idling. It does not turn on, when A/C is turned on ( I realized AC is also not working on my car, it may be related or not).

Why does my car have a radiator fan?

You probably already know the purpose of the radiator and the cooling system in your car. When you are driving fast, the wind is passing through the radiator to cool the coolant down without issues, but when you are driving slow, there is no wind pushed through the radiator. This is why we use a radiator fan.

Why are my cooling fans not turning on?

If the compressor is running long enough to build heat in the high side of the system, and the cooling fans don’t turn on, I would begin finding the fan relays and add power to the appropriate circuit to see if the fans turn on at all. This will require a wiring diagram.

How to troubleshoot a Cavalier radiator fan that is not working?

Install a jumper wire to the red wire at the harness connector and the black wire to ground. Touch the red jumper to battery positive side and the fan should operate if it is not burnt out. If it does not come on, check the connection for a good power and ground on the jumpers. If the connections are good, replace the fan.

What should I do if my radiator fan is not working?

Inspect the radiator fan by spinning it with the fingers and see if it is free moving. Do this only with the engine off and cool. The fan can come on at any time even with the key off when the engine is warm. Install a jumper wire to the red wire at the harness connector and the black wire to ground.

Why does my car fan come on when the engine is not running?

Consult your vehicle repair manual to check the required sensors and switches. On a warm engine, the fan may come on even if the engine is not running. When working on a hot engine or an engine that is running, keep your hands and tools away from the fan blades and moving components.