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Ac/heater Blower Motor

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Old Jun 22, 2006 | 08:34 AM
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From: blue springs mo usa
Default Ac/heater Blower Motor

I just replaced the what needed to be replaced on AC and started charging (134a) and found out that the blower motor would not work. I checked the fuse it was OK I have ordered a new relay. My question is is there any where else I need to look for a problem? stupid me ----- this is on a 78

Last edited by fdevole; Jun 22, 2006 at 08:39 AM.
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Old Jun 22, 2006 | 09:35 AM
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nothing stupid about it, get a book on that specific year car, shop manual. Good Stuff in there
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Old Jun 22, 2006 | 09:42 AM
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Originally Posted by fdevole
I just replaced the what needed to be replaced on AC and started charging (134a) and found out that the blower motor would not work. I checked the fuse it was OK I have ordered a new relay. My question is is there any where else I need to look for a problem? stupid me ----- this is on a 78
Is your blower motor grounded?Has its own seperate ground.Did you check motor by jumper direct?12 volts to terminal
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Old Jun 22, 2006 | 09:43 AM
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Originally Posted by SIXFOOTER
nothing stupid about it, get a book on that specific year car, shop manual. Good Stuff in there
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Old Jun 22, 2006 | 09:52 AM
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Originally Posted by SIXFOOTER
nothing stupid about it, get a book on that specific year car, shop manual. Good Stuff in there
I have three books on specific year and all of them tell you how to change a blower motor,but nothing on trouble shooting electrical.
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Old Jun 22, 2006 | 09:55 AM
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Poor ground or failed speed selector switch on the console are often the culprits.
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Old Jun 22, 2006 | 10:24 AM
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On My 79 the hot wire had some corrision at the motor terminal,
cleaned it and has worked fine ever since. Kinda hard to get to the
terminal on the motor but whats not hard to do on one of these
puppies ?
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Old Jun 22, 2006 | 10:36 AM
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The ground terminal is special---the screw that holds it on must go through the metal case---the other screws go into fiberglass--the ground screw is usually silver and others are black---also if you had your starter off make sure you put that black wire with large turm.to ground

Last edited by ...Roger...; Jun 22, 2006 at 10:38 AM.
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