Ok this isnt for a hot rod its just somehtign i dont knwo how to fix and need to get fixed. Ok my girlfreind has a 1996 mercury cougar. Now the problem is the heater wont really work. Like she'll turn it on full blast and it will barely blow. it does a very little bit but not like it should be doing. So i wanna know whats wrong if anyone knows. Is It a fuse?. the blower?. is it going to be expensive to fix?. if it is a fuse how is it possible to tell if its blown?