Ok Ive installed new underdrive pulleys, the crank and alt pulley.. Now my car is overheating. My fan is not kicking on when car gets hot.. But when i turn the A/C on the fan comes on and car cools down.. Everything was ok before I installed the pulleys.. Are the pulleys the problem??

 

I'd try the fuse.

 

If it was the fuse, the fan wouldnt come on with the A/C would it..

 

ttt

 

possibly a bad relay mabe