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2006 Saturn Vue low on freon but can't put much in

Posted: Thu Apr 20, 2017 1:51 pm
by atikovi
Just bought it with the a/c inop. Gauges show around 25 psi so I figure it's just a little low. Connect my drum of freon with a heater and after about 10 minutes it only takes 7 oz. Gauges around 60 low 90 high at 80 degrees. Both lines warm. What should be my next step? It has 220,000 miles so I assume replace the compressor?

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Thu Apr 20, 2017 5:47 pm
by Dougflas
Recover the charge and recharge with proper amount. That way you can eliminate refrigerant charge as a problem. Most AC problems are low refrigerant problems. You could have a stuck control valve in the compressor. Easier to eliminate charge as a troubleshooting step.

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Thu Apr 20, 2017 5:58 pm
by atikovi
Was able to add another 10oz with engine at 2,000 rpm and air got cold. Soon as it went to idle it was warm again. Seems like control valve issue.

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Mon Apr 24, 2017 2:30 pm
by Tim
Need low and high side pressure readings!!!

Really should reclaim and recharge to proper specs as suggested.

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Mon Apr 24, 2017 3:54 pm
by atikovi
Pressure readings in original post. Will replace the control valve and retest.

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Mon Apr 24, 2017 5:57 pm
by Cusser
Tim is asking about the pressures AFTER you added the additional 10 ounces.

Re: 2006 Saturn Vue low on freon but can't put much in

Posted: Mon Apr 24, 2017 6:31 pm
by atikovi
Don't remember now, just that they were higher when I reved it, but not much more at idle.