[dbgrubbs]

Last week while it was real cold my heater fan started making a lot of noise and I could feel the vibration too. I guess it got bad enough that it heated up the resistor and it blew. After looking around quite a bit, I figured out how to fix the thing. What blows is a thermal fuse. I found what I believe to be a direct replacement from Radio Shack. The part number is 270-1322 128 degrees C (262.4degrees F). I had some copper rivets left over from fixing GTV6 taillight boards. I drilled out the old rivets and after bending the ends of the fuse into loops, riveted it back to the board. Tests fine according to SamW's working resistor. Of course I also need to replace the fan too!

Just thought I'd share in case anyone was in the same predicament.

Don

 

[torcia]

Don,

Thanks for the great tip. Couldn't get anything but high out of my fan. Checked the continutity of the resistor pack and it was obvious the thermal fuse was blown. Changed it out and now I have all three speeds again. This is what the AlfaBB is all about!!!!

 

[Dave Anderson]

Heater Resistor Wires

Great post guys. I also need to replace my thermal fuse, but I also forgot the order of the wires. Is it red-yellow-gray when looking up under the dash? or some other order?
Dave A.

 

[torcia]

Dave,

Mine is yellow-red-grey going from the outside of the car towards the middle. The leads are labeled low-high-med respectively.

 

[gkrumian]

Is this part located on the backside of the fan switch?

 

[dbgrubbs]

Is this part located on the backside of the fan switch?

No above and to the drivers side of the fan motor.

 

[superloaf]

How has this fuse held up over time? Just wondering if it was a good replacement or if you had to go in again and find something else?

Thanks.

 

[superloaf]

DB,

How is this fuse holding up? I'm trying to put one in my car but now I can't get the motor out (see my other thread if you have any advice about what I'm doing wrong.)

https://www.alfabb.com/bb/forums/mi...686-heater-fan-motor-removal.html#post8387494

 

[dbgrubbs]

The resistor fuse has held up well. No issues since I installed it over 10 years ago. But I also keep it free of debris.