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- The 1967 - 1972 Chevy/GMC Suburbans & Panels Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=38)

- - '71 AC controller woes (https://67-72chevytrucks.com/vboard/showthread.php?t=734950)

GPearson

04-08-2017 02:17 PM

'71 AC controller woes

1 Attachment(s)

Howdy all,
It's "get the suburban ac fixed" season in Texas. I recently replaced the seized compressor and put a new dryer on. AC shop evacuated and she held vacuum. Now she's charged up and cooling; however, since I got it, the compressor will only cycle when the controller is set to defrost. Im having trouble finding diagrams that show how that controller even works. The system was converted before I bought it, and I'm not sure how that affects the situation. Just figured I'd see if anyone had any insight before I start tearing into the dash.

Thanks in advance!

Bigdav160

04-08-2017 04:45 PM

Re: '71 AC controller woes

Need some underhood pics as these were not cycling systems

GPearson

04-09-2017 04:38 AM

Re: '71 AC controller woes

Quote:

Originally Posted by Bigdav160 (Post 7909964)

Need some underhood pics as these were not cycling systems

On it. I'm currently in Wyoming in route to Texas. I'll be home tomorrow evening and snap some pics.

But, in the spirit of being clear, it has been converted to r134a. That type of system should cycle, right?

Bigdav160

04-09-2017 07:47 AM

Re: '71 AC controller woes

Not necessarily.

It depends on what type of other changes might have been done.

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