| [GMCnet] Ac question, ac on duracool [message #96084] |
Mon, 16 August 2010 14:05  |
Gerald Work
Messages: 102
Registered: June 2010
Karma:
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Senior Member |
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Hi, thanks for the helpful responses. I have found that the pressure at the line gauge is a function of how far the piercing valve is backed out. Learning that, I did commit my last can of duracool, pierced it, then backed out the valve only a little way, held the can upside down and drizzles most of that can in. The pressure at idle did go a bit over 25 psi and we once again have cool air at the dash. We will see how long it stays cold...... I have no high side gauge so don't know what that pressure is.
Jerry Work
78 Royale
Kerby, or, now in Gillette, WY on our way back west. 9061 miles and counting on this cross country adventure. 1087.7 gallons of good and bad 87 oct. gas for 8.42 trip mpg.
> mp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
are you holding the can upside down when adding Duracool?
--
Fred V
'77 Royale RB 455
P'cola, Fl
------------------------------
Message: 18
Date: Sun, 15 Aug 2010 18:06:02 -0500
From: Phil Swanson <woodyman1@sbcglobal.net>
Subject: Re: [GMCnet] Ac question, ac on Duracool
To: gmclist@temp.gmcnet.org
Message-ID: <176cc.4c6872da@gmc.mybirdfeeder.net>
Content-Type: text/plain; charset="ISO-8859-15"
To properly diagnose this problem, you will need to get both high and low pressure readings. It is very possible to have a fairly good low pressure readings but way too low on the high side. The differential between the two will tell the story. You might be looking at compressor failure due to too high a low pressure or visa versa. Bottom line is you need to measure both sides. Also there is no such thing as a suction line, this is a misnomer.
Phil Swanson
77GMCPB
Sent from my iPad
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