Engine Fan running on high most of the time

[krell600]

My engine fan runs at full speed when the engine gets heated up. The car is not overheating. Only when I set the heat at 90 degrees, it will become inaudible. What is the cause of this and what should be done? Thank You in advance for your help.

 

[#1fordfan]

Sell!!!

 

[htrdlincoln98]

Are you turning the heat/defroster on or just heat? Many cars turn the ac on with defroster. The fans come on high with the ac.

 

[joegr]

My engine fan runs at full speed when the engine gets heated up. The car is not overheating. Only when I set the heat at 90 degrees, it will become inaudible. What is the cause of this and what should be done? Thank You in advance for your help.

It would help to know the year of your car and if it is a V8 or V6.

When was your last coolant flush? Did you check the coolant level? Have you tried correctly bleeding all the air out of the cooling system?

 

[Ls208]

a few months ago my when i would drive my carthe fan would turn on too, it wouldnt getto overheating temps but was definatley runnin hotter then usual. i replaced the thermostat and had the radiator flushed nd it did the trick