I removed my factory fan and put on a single electric 14inch fan when im stopped with the ac on the car will over heat when its moving its fine just the other night it was cool out and i had the ac on the car never overheated but now that it hot out it overheats. Should i add another fan like two 12inch?

 

Two fans work great for me.Make sure they are blowing towards the motor not away.Sometimes aftermarket fans are reversed and will cause what your describing.

 

thanks alot..