Contour Enthusiasts Group Archives Forums General Troubleshooting Heater/Blower motor fuse problems

I have a problem with my heater. When I replace the 30 amp blower motor fuse, my heater works fine for a minute and then the fuse blows again. Would this be a sign that the blower motor is bad, or something else that's causing the fuses to blow? The heater worked great until a week ago, and then this problem started occuring. It would be nice to have heat in MN during the winter.

If the fuse is blowing, there has to be a short somewhere, Hard to find, but thats my guess.

well, i jsut replaced my heater fuse, one of the big yellow ones, there are 3 but one is for hte heater, not sure if there the same ur talknig about or one of the smaller ones. i dont have a owners manual so i dont know. my heater one was 60 amps tho, and it took about 6 hours to replace cuz it was a b!tch get the tray out. if that blew, it might be caused by an overload or a "spark" in the altenator, mixed with something else thats on making the fuse blow

The fuse that keeps blowing on my car is number 37. It's found under the driver's side dash in that fuse box. I did a search and found a couple similar problems. There must be a short somewhere.

That could be a short somwhere or any of the three components involved shorted.

a. The blower motor
b. The Heater blower series resistors
c. Your blower speed switch

To discard the Heater blower resistors, test it on max speed (number 4 I believe). If that still blows your fuse, then it is between the motor and the switch.

To discard the motor, connect the motor ground directly to any ground on the car and test. You can see some diagrams and connector info on these links:

Link 1
Link 2
Link 3

If that still blows your fuse, then could be the switch or a shorted wire in between.

Hope that helps.