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Old 03-25-2007, 18:01   #1 (permalink)
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heater blower motor problem

my heater blower motor doesn't seem to blow out air on the low setting,but does seem to work fine on the medium and high blow setting.does anyone know if there is a relay or if this might just be another bad switch?
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Old 03-27-2007, 20:48   #2 (permalink)
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Re: heater blower motor problem

Blower resistor located behind the glovebox.
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Old 03-29-2007, 06:59   #3 (permalink)
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Re: heater blower motor problem

I second that! It is sometimes also called the Block resistor.

Once you see it and get it out you'll understand how it works. It is block of 4 different sizes of wire (or however many setting on your fan switch) that your switch routes current through to the motor. The small (or larger) the wire the slower (or faster) the motor turns. It sits in your duct work so that the passing air will keep it cool.

Make sure you can get the wiring harness off the block before you go to the dealer (yes - sigh). Often times the harness welds itself to the block because of all the moisture in the duct work, so you may need a new harness. If you go to the junkyard, cut at least 6 inches up the harness and take it with you.
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