two fuses one for low and one for high. the ac in my car would get hot in traffic but cold on the highway. the problem was the low speed fuse. also someone had posted a fix on the inside of the fan. the glue comes off all you have to do is glue it back. check these things before you spend the money. also check connection. maybe connect straight power to see if it moves might be a bad switch. let us know what happens with the results.