Radiator fan takes too long to come on

If your car is having trouble cooling and is running extra hot, it could be from a cooling fan not turning on at the right time. A car can also have difficulty warming up if the fan is running constantly.

Both of these things happen when the smallest of the cooling system components goes bad and is very common, so here is how to resolve it!

The cooling system of your car works to keep the engine running at the optimal operating temperature.

Should radiator fan turn on when ac is on

When a temperature sensor or fan relay or other component goes bad it can be difficult to diagnose. I have experience troubleshooting these problems and here is what I learned and hopefully will help you get your radiator fan to be on at the right times.

How soon should the car cooling fans come on if you let the car Idle?

After starting your car, generally it takes 10 to 15 minutes of idling before the fan comes on.