| Duracool, low high side ?? [message #221534] |
Sat, 07 September 2013 18:24  |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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spent some more time working on my AC system, it's just not cold, or even cool.
I had it evacuated, a new dryer and I had a second evap under the couch plumbed in.
I put in too much duracool ( about 50 psi on the low side), I was reading the gauges wrong (oops), but then recovered the excess till I showed 25psi.
It's 90 and humid. out.
The AC, both of them, are blowing warm air.
The low side tube is warm.
The high side is only showing 55 psi?
Shouldn't be more like 255psi??
I feel like getting a new compressor, expansion valve and dryer and just starting over.
Seems like either the expansion valve is stuck open or the compressor is weak.
Either one requires opening the system again, so why not just replace them both?
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] Duracool, low high side ?? [message #221546 is a reply to message #221534] |
Sat, 07 September 2013 19:26  |
Emery Stora
Messages: 959
Registered: January 2011
Karma: 4
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Senior Member |
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When my air conditioner stopped cooling on the way home from Dothan AL I figured it must have lost so charge. But when I checked it out I found my Los side pressure was fine boy my high side was below. 100 psi.
I replaced the compresdor and evacuated and filled with almost. 3 cans of Duracool and its blowing cold again.
I suspect that your compressor has gone bad.
The high side runs lower with Duracool but it will still be between 150 to 200.
Emery Stora
77 Kingsley
Frederick, CO
On Sep 7, 2013, at 5:24 PMKeith V <my427v8@hotmail.com> wrote:
>
>
> spent some more time working on my AC system, it's just not cold, or even cool.
>
> I had it evacuated, a new dryer and I had a second evap under the couch plumbed in.
> I put in too much duracool ( about 50 psi on the low side), I was reading the gauges wrong (oops), but then recovered the excess till I showed 25psi.
>
> It's 90 and humid. out.
>
> The AC, both of them, are blowing warm air.
> The low side tube is warm.
>
> The high side is only showing 55 psi?
> Shouldn't be more like 255psi??
>
> I feel like getting a new compressor, expansion valve and dryer and just starting over.
>
> Seems like either the expansion valve is stuck open or the compressor is weak.
>
> Either one requires opening the system again, so why not just replace them both?
> --
> Keith
> 69 Vette
> 29 Dodge
> 75 Royale GMC
> Mounds View. MN
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Duracool, low high side ?? [message #221575 is a reply to message #221546] |
Sat, 07 September 2013 23:27 |
Jerry Wheeler
Messages: 246
Registered: January 2013
Karma: 2
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Senior Member |
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Speaking of Duracool, the equivalent product, Enviro-Safe R-134a is
available in case lots (12 six ounce cans) on Ebay for $47.95 with free
shipping. One seller has these terms or make offer. I made a $42 offer
and he countered with $46.95, so I bought a case.
JR Wheeler 78 Royale NC/OR
On Sat, Sep 7, 2013 at 8:26 PM, Emery Stora <emerystora@me.com> wrote:
> When my air conditioner stopped cooling on the way home from Dothan AL I
> figured it must have lost so charge. But when I checked it out I found my
> Los side pressure was fine boy my high side was below. 100 psi.
>
> I replaced the compresdor and evacuated and filled with almost. 3 cans of
> Duracool and its blowing cold again.
>
> I suspect that your compressor has gone bad.
>
> The high side runs lower with Duracool but it will still be between 150 to
> 200.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
>
> On Sep 7, 2013, at 5:24 PMKeith V <my427v8@hotmail.com> wrote:
>
> >
> >
> > spent some more time working on my AC system, it's just not cold, or
> even cool.
> >
> > I had it evacuated, a new dryer and I had a second evap under the couch
> plumbed in.
> > I put in too much duracool ( about 50 psi on the low side), I was
> reading the gauges wrong (oops), but then recovered the excess till I
> showed 25psi.
> >
> > It's 90 and humid. out.
> >
> > The AC, both of them, are blowing warm air.
> > The low side tube is warm.
> >
> > The high side is only showing 55 psi?
> > Shouldn't be more like 255psi??
> >
> > I feel like getting a new compressor, expansion valve and dryer and just
> starting over.
> >
> > Seems like either the expansion valve is stuck open or the compressor is
> weak.
> >
> > Either one requires opening the system again, so why not just replace
> them both?
> > --
> > Keith
> > 69 Vette
> > 29 Dodge
> > 75 Royale GMC
> > Mounds View. MN
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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Unsubscribe or Change List Options:
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| Re: [GMCnet] Duracool, low high side ?? [message #221578 is a reply to message #221575] |
Sat, 07 September 2013 23:45 |
jim kanomata
Messages: 257
Registered: March 2007
Location: fremont,ca
Karma: 12
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Senior Member |
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One should check to see that the evaportivcoil is clear of animal nest.
Our a/c guy was having problems last week, when our most unreliable tech walked in ad looked at the meter and told him to remove the cover and check for restriction there.
Well, he was right.
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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| Re: Duracool, low high side ?? [message #221580 is a reply to message #221534] |
Sun, 08 September 2013 00:38 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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If your low side pressure is close to the high side pressure say 25 low and 50 high your compressor is shot. Just make sure the clutch was engaged when you checked it at 1000 rpm or more.
Roy Keen
Minden,NV
76 X Glenbrook
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