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1980 corvette AC/Heat problem

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Old Apr 24, 2010 | 07:36 AM
  #1  
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From: Chipley Florida
Default 1980 corvette AC/Heat problem

Hi I own a 1980 corvette L-82 model.

I have just about completed the restore on most of the car. I have a problem with getting the AC to blow out the vents instead of the floor. I replaced the whole AC system in the car and converted it to R134.
I replaced the condenser, the radiator, the pressure switch, the compressor and the drier. I have all new oil .
I noticed when I select the AC or Heat switch I do not get a high volume of air flow out of the vents at all. I get it all out the floor vents and even then it is not very strong. I replaced the blower motor and basket, the resistor switch, the relay, I even replaced the fan switch in the controller on the center console?

Does any one have an idea what it could be? I have been told that the vacuum rubber hose line that operates the vacuum switch could be bad. Another words the switch could be bad.

Does any one know where I can get this switch???

Any help is greatly appreciated.

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Old Apr 24, 2010 | 08:15 AM
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From: Columbus MN
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This might be what you are looking for:

Air Conditioning Control

You can shop around for the best price.
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Old Apr 27, 2010 | 01:22 PM
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Originally Posted by MN80Vette
This might be what you are looking for:

Air Conditioning Control

You can shop around for the best price.
I think you are right thank you for the tip.....
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Old Apr 27, 2010 | 02:48 PM
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Most likely the vacuum switch on the control is bad and/or come apart. It fits other GM cars and used to be available from GM, not sure anymore.
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Old Apr 27, 2010 | 04:10 PM
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From: Mundelein Illinois
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with above. Also make sure you don't have a pinched line coming from the engine. No vacuum, no vent movement
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Old May 4, 2010 | 11:15 AM
  #6  
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Originally Posted by spedaleden
:i agree: with above. Also make sure you don't have a pinched line coming from the engine. No vacuum, no vent movement
good call found broken switch in controller and replaced also found pinched line fixed both work great !

Thanks to all!!!
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