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10-06-2003, 11:48 PM
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#1 |
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Registered User
Join Date: Jun 2003
Posts: 34
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AC Fan Trouble
Hopefully, someone has solved this problem before:
1979 C30 dually, 454/TH400. I spent a TON of money to get the AC functional, but the 3-speed fan only runs at 1 speed - low! Any ideas or starting points. I could just go through and replace everything, but I would prefer to figure out what the problem is and fix it. Any help is greatly appreciated. Geoff Archer Las Vegas, NV 
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10-06-2003, 11:51 PM
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#2 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Check the blower relay. It's located right on the box uner the hood. It will have about 4 wires going into it. That controls the speeds. Costs less than $5.00.
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10-06-2003, 11:56 PM
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#3 |
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Registered User
Join Date: Jun 2003
Posts: 34
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Relay
Thanks! Wasn't sure what was what under there for the AC. I'll give it a shot.
GA 
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10-07-2003, 12:04 AM
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#4 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Use volt meter to check for power into the relay.
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Linear Mode
