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C3 Cooling and Heating Systems

a/c (1/3)
 5/21/18 6:10pm
dwa175Gold Member
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oakville, CT - USA

Vette(s):
1979 coupe and now 2007 c-6


Joined: 7/19/2014
Posts: 192

79  low pressure on high side a/c com   30 lbs on low side    low pressure on high side the this mean bad com ? just asking   david

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Re: a/c (2/3)
 5/21/18 8:14pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 557

It could mean the system charge is low also. I would try first to add one can of freon to see if you can get that high pressure up. You need to make sure that you're adding the same type of freon that's in the system however.

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1973 L-82 4 spd

Re: a/c (3/3)
 5/23/18 7:02pm
dwa175Gold Member
Gold Member
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oakville, CT - USA

Vette(s):
1979 coupe and now 2007 c-6


Joined: 7/19/2014
Posts: 192

it r-12  I I am not  going to change   will see if I can add  thank you



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