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Old Aug 27, 2017 | 09:20 AM
  #1  
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Default A C frustration

Help! Cold ac under the hood, hot inside. Is there a quick fix? I read about doors. I had a 69 Grand Prix this happened once,turned out to be vacuum line slipped off or was pride off,while under the hood. Do we have a vacuum line? I ride a lot with Targa off,but would like option for ac, especially with my lady in the car.
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Old Aug 27, 2017 | 03:21 PM
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Originally Posted by BRKLYN
Help! Cold ac under the hood, hot inside. Is there a quick fix? I read about doors. I had a 69 Grand Prix this happened once,turned out to be vacuum line slipped off or was pride off,while under the hood. Do we have a vacuum line? I ride a lot with Targa off,but would like option for ac, especially with my lady in the car.
​​​​
Underhood? Yeah theres a vacuum canister and lines that control the vent settings, cold ac on the pass side vent and hot on driver side means low freon.
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Old Aug 31, 2017 | 05:27 PM
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I will search for the canister and evaluate the hose.
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Old Aug 31, 2017 | 05:35 PM
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Originally Posted by BRKLYN
I will search for the canister and evaluate the hose.
The canister is in the passenger side fender well. Behind the pcm, with the door open you can see the the side of it and 2 mounting screws.
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Old Aug 31, 2017 | 05:37 PM
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The vacuum controls the different settings, defrost, feet, face
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Old Aug 31, 2017 | 08:31 PM
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Originally Posted by BRKLYN
Help! Cold ac under the hood, hot inside. Is there a quick fix? I read about doors. I had a 69 Grand Prix this happened once,turned out to be vacuum line slipped off or was pride off,while under the hood. Do we have a vacuum line? I ride a lot with Targa off,but would like option for ac, especially with my lady in the car.
I am in the same boat - I can grab the tubes that run along the firewall and they are cold - but nothing going on inside...
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Old Aug 31, 2017 | 09:09 PM
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Originally Posted by jjc508520
I am in the same boat - I can grab the tubes that run along the firewall and they are cold - but nothing going on inside...
So thats what cold underhood stood for, didn't know that. Does the a.c. have any codes? I think if there's a problem with the doors it throws a code.
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Old Sep 1, 2017 | 12:46 PM
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Originally Posted by 001pewter
So thats what cold underhood stood for, didn't know that. Does the a.c. have any codes? I think if there's a problem with the doors it throws a code.
The answers you seek are here.
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Old Sep 1, 2017 | 01:29 PM
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Originally Posted by unlvrebel
The answers you seek are here.
My ac is fine, I repaired the canister, Schrader, and slapped some freon in it. Op has ac problems.
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Old Sep 1, 2017 | 06:14 PM
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Originally Posted by 001pewter
The vacuum controls the different settings, defrost, feet, face
Mine goes where I set it. I'm getting hot air, on the other side firew all under the hood,it freezing cold.
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Old Sep 1, 2017 | 08:25 PM
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Originally Posted by BRKLYN
Mine goes where I set it. I'm getting hot air, on the other side firew all under the hood,it freezing cold.
Oh, I didn't understand then, I never had that problem so I've really got no help. Maybe someone else will chime in that's experienced it.
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