08-25-2011, 01:48 AM | #1 |
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Join Date: Jul 2008
Location: Concord, CA
Posts: 194
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Heater blower
I have a 72 AC Blazer. The other day, I noticed that the fan motor was slowing down and speeding up. The switch was set at high. The next day, no fan at all. Where do I look first? This is an AC cab, but the AC part is not funtioning at the moment. I was just running the fan.
Last edited by givengold; 08-25-2011 at 01:53 AM. |
08-25-2011, 10:26 AM | #2 |
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Join Date: Aug 2011
Location: shawnee, kansas
Posts: 13
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Re: Heater blower
Check the ground first.
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08-25-2011, 11:16 AM | #3 |
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Join Date: Nov 2007
Location: Hermiston, OR
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Re: Heater blower
Does it do the same on the other speeds?
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Running in place gets you nowhere fast. -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC. |
08-25-2011, 01:11 PM | #4 |
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Join Date: Nov 2007
Location: Turlock California 95380
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Re: Heater blower
Check the ground strap, clean it up while youre at it. Check the harness/connector at the motor to make sure it is getting battery voltage. Also check out the resistor pack behind the glove box. I had one that had surface rust causing low speed to not work... Hope this helps
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