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08-26-2009, 09:31 PM #1
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- Aug 2009
a thought my freon was low, but....
the a/c is not really cold, I htought I was low on freon so I bought a kit to recharge it but when I checked I have almost 50 PSI in the low pressure when the a/c is in full blow.
I don't have any reference for that truck.
do somebody know what the psi should be ? what would be the problem(S).
08-26-2009, 11:12 PM #2
You need the right tools and documentation to work on A/C.
That would be a set of gauges so you can read the low and high pressures.
Then a GM Factory Service Manual set will have pressure tables in it for what the pressures should be (low and high). The pressures vary depending on the ambient air temperature and humidity. Thus the reason for the chart.
You can order a GM Factory Service Manual set from helminc.com or a GM dealer.92 GMC Sierra 2500
08-27-2009, 08:43 PM #3
what i recommend is bring it in to a reputable AC shop,
2003 Z71 Silverado LS
Access roll up cover
Billet Grill insert
CB with PA system
Waiting to be installed
Two 8in RF HX2 punch( would have 12s but they got stolen)
08-27-2009, 10:13 PM #4
Just had the same issue with my 1994 Silverado Ext 4WD.
Turns out that the Low side pressure was the same as the high side.
This could be a problem with the valve on the Condenser.
In my case I had to replace the Condenser, A/C compressor, and the Dryer.
Once the system pressure is the same on both the high and low side, the Compresser usually gets fried.
Best bet is to take it to a good A/C shop.
It is Kool to be cool...Pavement sucks... :grrrrrr:
1994 K1500 4x4 Ext. Cab
PCM chip and Xenon 8000k bulbs
350cu.in bored over .050"
balanced Crank, 10:1 compression
Flat top pistons,cam,ported heads
Option Racing Cold Air Intake
Holley Throttle Body Spacer
Accell Igition, 45kv coil
FloTech Headers, no CATs, dual exhuast
Goodyear Silent Armor A/T 305/70-16
Pioneer SupertunerIII CD USB Bluetooth
Kicker ZX200.2 ZX Amp
Kicker Audio COMP 10" Subwoofer
08-28-2009, 08:20 AM #5
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- Aug 2009
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