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Old 09-13-2019, 05:19 PM   #1
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2016 Grand Tour AC low pressure ports - help!

Our dash AC is blowing cool not cold so I think that we need a little charge. In looking for the AC Low pressure ports I see what I think is 2 of them. Both coming off a little manifold close to the AC freeze sensor (wire circuit code YYG).
See pic with the 2 black caps.
Which should I connect into?
Thanks in advance?Click image for larger version

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Old 09-13-2019, 11:36 PM   #2
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The ports are a different thread under those caps and sometimes the caps have " L H " on them .

The , high pressure line is the smaller of the two lines because the pressurized liquid doesn't need as large an inside diameter as the low pressure , vapor side of the system.

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Old 09-23-2019, 07:21 PM   #3
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X2 above
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Old 09-24-2019, 06:07 AM   #4
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Originally Posted by depchief View Post
X2 above
Found the low pressure connect as you described. Charged it up and so far it's cold and holding.....
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