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Old 04-24-2007, 02:28 PM   #1
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Default Blower motor not work on high

My blower motor speed works on low and med. When I move switch to high it will not run. Car is a 1989 Lesabre LN3. Need help.
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Old 04-24-2007, 08:29 PM   #2
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Default Re: Blower motor not work on high

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Originally Posted by rickscorner
My blower motor speed works on low and med. When I move switch to high it will not run. Car is a 1989 Lesabre LN3. Need help.
Check the contacts in the speed relay (engine bay, cowl, passenger side, under the big black plastic cover.) Reseat it a few times and see if your Hi comes back.

There'* two speed circuits for the blower fan. One runs through a resistor block, to give you the speeds other than high. The high speed circuit runs through the relay to the blower motor.
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