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Old 07-17-2016, 12:13 PM   #1
MF-DIF
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Member#: 62197
Join Date: May 2004
Chapter/Region: South East
Location: Savannah
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2002 PSM WRX
Mini Cooper S, Yami FZ-09

Default AC fans no longer worky. Halp it's 100 errday in GA!

The title is a bit dramatic. I'm running into an issue with my 2002 WRX, dunno if anyone stil owns these old things and posts. My issue is the fan for AC no longer works. Cool or hot, nothing blows out of the vents with the fans switched on to 1-4.

Fuses and relays confirmed good, I've swapped them around with working ones. The AC line if I push the button to ON I hear the compressor run. It even frosted in the driveway when I was checking the fuses/relays with it on.

Air still flows through the vents if I turn that to open while driving. No blockage there.

The main fan on the radiator works, it kicked on when I was checking the electronics as well.

Thoughts? Sub-fans, themostat, the knobs on the dash (dunno what else to call them).
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Last edited by MF-DIF; 07-17-2016 at 12:22 PM.
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Old 07-17-2016, 01:01 PM   #2
Mulder
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15 WRX/05 GTO

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If the compressor runs it means the blower circuit is getting power. It doesn't kick on when the switch is turned to off.
There is a relay for the blower, do you hear it click when you turn the switch on?
Look under the passenger side dash, if you pull the carpet back you should see the connector for the blower. Make sure it's plugged in and probe it with a meter or test light. You can pull the resistor and check that but a burned out resistor will still allow the blower to run on high.
To physically check the blower itself, pull the glovebox and take off the cabin filter cover. Remove the filter if there is one, then reach inside and try to spin the blower by hand. If it's really stiff or frozen you've found the problem.
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Old 07-17-2016, 06:44 PM   #3
z
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04 STi
in ur Floriduh

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Just an FYI, your AC fan is the one under the hood, aka radiator fan.
(there's actually 2 but...)

Your problem is the blower motor as Mulder suggested, under the passenger side dash. If you are getting voltage at the connector (can reach from under the dash without taking the glove box out) the blower motor is likely bad.

Try giving it a whack from underneath and see if it kicks on with the switch set to 4.
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Old 07-17-2016, 08:45 PM   #4
MF-DIF
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Quote:
Originally Posted by z View Post

Try giving it a whack from underneath and see if it kicks on with the switch set to 4.
This worked!

Thanks guys, I guess it's like the starter trick. I guess I'll order a new one and keep a BFH with me until the replacement comes.
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Old 07-18-2016, 10:13 AM   #5
z
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in ur Floriduh

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Quote:
Originally Posted by MF-DIF View Post
This worked!

Thanks guys, I guess it's like the starter trick. I guess I'll order a new one and keep a BFH with me until the replacement comes.


That got me across Alligator Alley (hot as f) when mine was going out. I kept having to lean over and give it a whack with the bfh.

FYI, subaru doesn't sell just the replacement motor. At least for my car, they only had the entire blower unit which consists of the plastic case, little flapper door/servo that switches from recirc/outside, etc. Was like $300.

I ended up just finding a replacement motor online (used from an auto recycler) for like $40.
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Old 08-30-2017, 01:46 AM   #6
X'seeyah
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So I checked my fuses and they work fine.

I whacked my blower motor and it starts to run, but not very well. It makes this struggling sound. When I turn off the car and turn it back on it doesn't work till I whack it again.

What does this mean? Does this mean I need a new blower motor assembly?
Which I believe is this part # W0133-1986095

Any help would be appreciated!
X
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Old 08-30-2017, 11:06 AM   #7
Charlie-III
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Silver Sleeper BK, 5MT

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Quote:
Originally Posted by X'seeyah View Post
So I checked my fuses and they work fine.

I whacked my blower motor and it starts to run, but not very well. It makes this struggling sound. When I turn off the car and turn it back on it doesn't work till I whack it again.

What does this mean? Does this mean I need a new blower motor assembly?
Which I believe is this part # W0133-1986095

Any help would be appreciated!
X
Sounds like you found your issue. I believe the blower motor uses bushings for the armature, the lube dries out making the motor struggle to come up to speed. Hitting the motor gives it a jolt that gets it spinning.
If you want, you could pull the blower and disassemble the motor and lube it. Some 3in1 oil or white lithium lube may keep it going for a bit.
Before pulling the motor end caps, make a mark from the cap to the center of the motor so they get reinstalled in the same end and orientation.
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