C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Slow Turning Blower Motor

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Old Jun 15, 2020 | 08:30 PM
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Default Slow Turning Blower Motor

Ok fellas put your thinking cap on. I just recharged my AC system, vette was sitting for 8 years. The system is charged and running well. My issue is the blower motor, its running but at a slow speed no matter what fan speed it's at. No noises coming from the motor, cold air coming out but not as strong as it should be....switch or blowe motor ?
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Old Jun 15, 2020 | 09:06 PM
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Check for power prior to and after the switch.
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Old Jun 15, 2020 | 09:11 PM
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Everything is fine power in and out, blower turning all the speeds are coming on. I'm in the middle of reading a thread on the subject and they says 85 are known to have this issue of blowing very slow. Makes no sense
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Old Jun 15, 2020 | 10:11 PM
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not the blower motor resistor?
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Old Jun 15, 2020 | 10:14 PM
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Oh, ok I'll check that in the morning, thanks...
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Old Jun 16, 2020 | 09:04 PM
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The resistor is out of the circuit at the HI speed setting, so that has no effect on the blower speed at the HI speed. After sitting so long, the bearings in the motor are probably dry.

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Old Jun 16, 2020 | 09:07 PM
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With the risistor being 35 years old I'll replace that first and them move over to a new blower motor...thanks for the information
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Old Jun 17, 2020 | 01:10 AM
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Originally Posted by 85Vetteman
With the resistor being 35 years old, I'll replace that first and then move over to a new blower motor...
You can completely unplug the resistor and you'll still have the HI fan speed operational. Try it! If you just want to throw away money, I'll take it! Send me a PM, and I'll give you my address. Think of how much trouble I've saved you by not having to replace that perfectly good resistor.

If you're convinced that the resistor should be replaced because it's 35 years old, your shopping list of other stuff that's 35 years old is immense!!!

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