Common questions

When does the coolant fan switch turn on?

When does the coolant fan switch turn on?

Please provide some information about the part you are looking for. When the coolant reaches a specified temperature, this switch turns on the vehicle’s coolant fan, which draws air through the radiator to regulate engine temperature.

Why do the fans not come on when the a / C is turned on?

The fans do also come on when the a/c is turned on but they will not come on when the check gauges light comes on (cause it is too hot) I usually try to shut the car down at 235-240 if the fans don’t come on but this last time the ignition switch stuck in run and I couldn’t get it turned off quick enough.

Where is the temperature switch that controls the activation of the cooling fans?

Where is the temperature switch that controls the activation of the cooling fans. I suspect mine are not coming on and need to change the switch/sensor. PCM sensor is the one on the water pump. Don’t change stuff without diagnosing.

Where is the relay on a radiator fan?

The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.

Please provide some information about the part you are looking for. When the coolant reaches a specified temperature, this switch turns on the vehicle’s coolant fan, which draws air through the radiator to regulate engine temperature.

What are the symptoms of a bad cooling fan relay?

1. Engine running hot 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 is the function of the cooling fan relay?

The cooling fan relay essentially functions as the switch for the engine’s cooling fans, and is therefore an important electrical component of the vehicle’s cooling system.

Why are the cooling fans not working on my car?

1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.

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Ruth Doyle