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Old 09-05-2024, 02:58 PM
rsworden rsworden is offline
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Default can't get heater to shut down
Hi guys. For some reason my vents are putting out hot air all the time. If I turn the heat on, and the fan on, then I get even more warm air. Any ideas on how to trouble shoot this? Thanks everyone.

This is an a/c 69 SJ with automatic climate control.

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  #2  
Old 09-05-2024, 04:10 PM
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kingbuzzo kingbuzzo is offline
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On my bird the vacuum hose popped off the firewall which I assume controlled the vents...

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Old 09-06-2024, 10:23 PM
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camerjeff camerjeff is offline
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On my old 76 GP I had the same condition caused by the nipple braking off the vacuum globe under the hood, replaced the globe problem solved. I hope yours is as easy to find and fix.

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Old 09-08-2024, 01:36 PM
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Those ATC systems complicate things. I'd have a look at the ATC section in the 69 shop manual. A lot of different components could cause your issue.

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Old 09-09-2024, 05:31 PM
chiefpontiac66 chiefpontiac66 is offline
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Quote:
Originally Posted by north View Post
Those ATC systems complicate things. I'd have a look at the ATC section in the 69 shop manual. A lot of different components could cause your issue.
This is very much correct. I had ATC in a 66 2+2. Lots of vacuum lines, vacuum actuators and sensors. It could also be the control head in the dash. I hope it's something easy. Good luck.

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