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C3 Cooling and Heating Systems

a/c (1/3)
5/21/18 6:10pm

dwa175

Gold 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
Standard Member
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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: 554

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

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Re: a/c (3/3)
5/23/18 7:02pm

dwa175

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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