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Old 06-24-2017, 10:19 AM   #1
Scooby Newbie
Member#: 351807
Join Date: Mar 2013
Location: Richmond, VA

Default Blower motor question

Long story short - blower motor is bad, ordered a new blower motor but got the wrong one (mine is auto a/c with power transistor, the new one is manual a/c with resistor)

So here's my question - does the transistor actually need to be installed into the slot in the blower motor, or can it sit outside of the unit? I installed the blower motor and left the power transistor connected, but not actually installed into the new unit. Fan speeds and everything work as it should. As long as the transistor isn't touching anything metal outside of the unit, am I ok? I know the transistor gets hot, but hopefully not hot enough to melt anything.

I am going to try and order the correct blower motor, but It's 90+ degrees right now and I'd like to have my A/C in the meantime..

Car is a 2005 WRX M/T Wagon

Here is what mine looks like:

And here is what the new one looks like:
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Last edited by gijosiahh; 06-24-2017 at 03:54 PM.
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Old 06-24-2017, 07:50 PM   #2
Trust no one
Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
02 WRX
15 WRX/05 GTO


The reason the transistor or resistor assembly are located in the blower duct is for cooling. If you leave the transistor outside the duct for a prolonged period of time it may fail prematurely. See if you can swap the good motor into the old housing, or get the correct assembly.
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