The radiator fan fix

[03PTMOM]

Recently I decided to replace the fan on my wife's 03 PT which did not work on high with a/c engaged. Before replacing it, I decided to open the fan motor and take a look at what could be the problem.

I found that inside the motor, there are four carbon brushes that ride along what I call a "spindle". One of the brushes was more than 3/4 worn out and not making any contact on the "spindle" surface. I thought swapping out brushes would do the trick and guess what? IT DID!

I tested it directly to a 12v source and it was fine. I then reinstalled it on the car, turned on the a/c and wow, what a difference. The a/c is super cold and it fixed my idle issue. I took a picture of the brushes inside the motor for all of you to see and try on your own PT.

This was a zero cost fix because I used a carbon brush from another small motor I had lying around. I found 12 carbon brushes on ebay for about $8 to change out all 4 brushes inside the motor to avoid this problem again. So, as long as its not a fuse,relay or other electrical problem, this fix may solve the issue of buying a motor or complete fan assembly.