Mystery part??
Junior Member
Joined: Oct 2006
Posts: 65
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From: Wigan, England
Car: 91 Trans Am 5.0
Engine: 305
Transmission: 700R4
I don't know what its called but it goes in the heater box under hood and fastens in near blower fan so probably has something to do with that or a/c.
Supreme Member
iTrader: (3)
Joined: Oct 2005
Posts: 1,833
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From: Cincinatti OH
Car: 1991 L03 700r4 RS
Engine: 1987 WS6 Trans AM Lb2
Transmission: Th350 red neck Performance 3k stall
Axle/Gears: 95 Mustang 8.8 built with 3.73s
That's the heater fan speed control.
Moderator
Joined: Jul 1999
Posts: 4,384
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From: Tulsa, OK
It's the resistor pack for the blower motor. Each of those coils represents a speed on your blower motor (full speed being direct current). If you have a certain speed that doesn't work but the rest do, it's because one of those coils are boogered.
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