A/C charge on 2002 gm 3.1 v6

[901Memphis]

Left center vent only hit 59F today but right center is still around 40f.

It's about 86F outside with 40% humidity. I really need a high side gauge. Do places loan those out?

 

[901Memphis]

So if a buy a high side gauge do you just keep filling the low side til the high side in in the range or do you go to the upper end of high side range or what?

 

[AVB]

The pressure chart is actually for diagnosing the system and not for charging. There are so many variables that it is difficult to charge by pressure alone. I would try to stay in the lower half of the high side range.

 

[Chris142]

Aim for 2.2x ambient and see how it does. Never over 2.5x ambient.