A/C Compressor Installation help!!!???

4x4s1088 · 07-31-2006, 09:42 AM

I need to know how much pressure should be run in a 134a system......we have the gauges but we are unsure of how much pressure to charge to.

Maverick · 08-03-2006, 10:57 PM

i've been told anywhere between 45-70 depending on humidity which idk if that is a bogus story or what but i think 60 would be pretty good, could be way off but i had 55 in mine and it wasnt too bad but i think i got about 60 or so in it now feels pretty good.

gmtech · 08-08-2006, 04:21 PM

You need to charge to the proper lbs per the label because with the r134a the pressures read the same with 1/2 lb in it or 2 lbs. The temp and humidity have a big effect on the pressures anywhere from 30-55 or so on low side and 150-300 or so high side. Has to be charged to proper amount.

07-31-2006, 09:42 AM	#1
4x4s1088 Full Member Join Date: Apr 2006 Posts: 24	A/C Compressor Installation help!!!??? I need to know how much pressure should be run in a 134a system......we have the gauges but we are unsure of how much pressure to charge to.

08-03-2006, 10:57 PM	#2
Maverick Full Member Join Date: Jul 2006 Location: Texas Posts: 15	i've been told anywhere between 45-70 depending on humidity which idk if that is a bogus story or what but i think 60 would be pretty good, could be way off but i had 55 in mine and it wasnt too bad but i think i got about 60 or so in it now feels pretty good. __________________ CHEVROLET "Friend's Don't Let Friends Drive" FORD 1962 Short Step-Side Chevy C10 1996 Ext Cab Chevy Silverado 1500

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08-08-2006, 04:21 PM	#3
gmtech Senior Member Join Date: Dec 2005 Location: farmville Va Posts: 348	You need to charge to the proper lbs per the label because with the r134a the pressures read the same with 1/2 lb in it or 2 lbs. The temp and humidity have a big effect on the pressures anywhere from 30-55 or so on low side and 150-300 or so high side. Has to be charged to proper amount.