legacycentral bbs

Hello all.

I'm having a problem with the A/C blower fan. Well maybe not so much with the fan. It only works on hi, but from I can gather after reading most of the posts under Electrical, seems like the speed resistor.

Where would one locate this particular item in a 1990 Legacy? Is it difficult to change? Is it expensive? Thanks!

bob

If you remove the globe box (just a couple of screws), you'll see it mounted in the evaporator core right in front of you, with a 4-pin electrical connector going to it. It's easy to replace.

It's kind of expensive. The part number is 72024AA000 and it lists for like $50. Online discount dealers sell it for somewhat less.

If you're handy you might actually try repairing yours. Just find the crack in the coils and solder it up.

Hey Vrg,

Thanks for the quick response. I found the speed resistor right where you said it would be. I then removed and inspected it and found that the thermal switch (or what ever it is called) was open. So after some time to figure out how the system works, I held it shut with my thumb and turned the fan on 3. It instantly got so hot that I could not hold on to it anymore. So I figured that the fan was drawing to many amps. I then removed the fan, took the motor apart and found it was quite polluted with leaves, bugs, and various other identifiable and unidentifiable debris. I cleaned all that out checked the brushes (almost worn out, maybe another year of service left) I also polished the rotor or stator, the copper area where the brushes ride. Then greased the bushings, reassembled, and reinstalled. Tried the same as before with the thumb and held it for nearly a minute without discomfort. Then soldered the thermal switch back into place and all seems well. It doesn't even try to kill the engine anymore when I turn the fan on.
I am extremely pleased. Thanks for the tip.

Bob

Great, nice work!

Yeah, I forgot to mention that overworked blower motors can cause these failures.

How long would you say it took you to overhaul the blower motor the way you did?

I would say that it probably took me about 30 to 40 minutes to get it cleaned up, lubed and back in the vehicle.

Thanks again for the help in locating the speed resistor

Bob