why does Fan does not turn on when car gets hot but turns on when car is off?

Asked by Apr 03, 2012 at 09:28 PM about the 1997 Acura TL 3.2 Premium FWD

Question type: Maintenance & Repair

1 Answer

325

I believe it is because when the engine is running, it is still circulating the engine coolant and there is also a chance that since you are driving, you are getting air over your radiator/engine just from moving. When you stop the fan kicks on to help the engine cool down without the help of the circulating coolant.

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