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why my heat/air fan only on high?

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Offline mattstracker

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why my heat/air fan only on high?
« on: May 16, 2011, 04:07:54 PM »
I have a 96 Geo Tracker my blower motor only works on high. Why?
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Offline smife

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Re: why my heat/air fan only on high?
« Reply #1 on: May 16, 2011, 04:45:36 PM »
The little resistor on your blower motor is bad
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Online fordem

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Re: why my heat/air fan only on high?
« Reply #2 on: May 16, 2011, 05:34:45 PM »
The fan speed is controlled by a resistor and a switch - either one of them (or the wiring) is your problem.
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Offline wildgoody

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Re: why my heat/air fan only on high?
« Reply #3 on: May 16, 2011, 09:15:03 PM »
I had the slower speeds stop working, re-soldered the wires
onto the switch and it works again

Wild
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Offline mattstracker

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Re: why my heat/air fan only on high?
« Reply #4 on: May 16, 2011, 09:36:02 PM »
where is the little resistor at on the blower motor?
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Offline wildgoody

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Re: why my heat/air fan only on high?
« Reply #5 on: May 16, 2011, 09:42:57 PM »
Those are resistor wires, and the air blows over them
to keep them cooled off, otherwise they would turn
red from the heat
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Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.
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Offline mattstracker

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Re: why my heat/air fan only on high?
« Reply #6 on: June 08, 2011, 09:23:13 PM »
got it working took it apart sprayed it with electric cleaner. works great on all speeds.
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Offline zuk1988

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Re: why my heat/air fan only on high?
« Reply #7 on: June 09, 2011, 07:32:55 AM »
Quote from: wildgoody on May 16, 2011, 09:15:03 PM
I had the slower speeds stop working, re-soldered the wires
onto the switch and it works again

Wild
That happened to my switch too.
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