hey just wondering if anyone had any thoughts on this problem. my high speed radiator fan wont come on but my low speed one works. the fuse is good. i tested it and it comes on when i test it but not when the car is running. it is causing my car to run very hot. the car is an automatic.

 

its probably not meant to come on until the engine temp gets over a curtian temperature. So thats probably why its not comming on when your car is just sitting there