heuster

First post - happy to be here - could use y'alls input on my 07 ES350 AC issue. I changed out the expansion valve and condenser to Denso units and put a new Denso compressor in.
4.5oz PAG46 including the compressor oil and exactly 19oz refrigerant on the charge. At night it will blow 43 degrees F in 90 degrees
During the day in full sun and 110 degrees it will blow 70.

Do I add or remove refrigerant in order to make driving in the Arizona heat tolerable for my wife? Please help!

heuster

Anyone have ANY ideas on this? Would appreciate some help and insights from anyone that has ran into this before.

ESh

Let's go one by one. Why you replaced all those parts? Did you do it or the mechanic?

heuster

I was getting a slow leak that I couldn't track down so it was recommended to me that the factory compressor leaks internally and is likely the culprit so I replaced the compressor, expansion valve and condenser. No metal shavings anywhere - this was more of preventative maintenance than anything since the compressor had 180k on it.

ESh

Do you have the machine to create a vacuum before filling it up with the refrigerant?

heuster

Yes sir - it is a 4.5cfm vacuum pump. I pulled a vacuum for about 45 minutes and then let it sit overnight to make sure that it wasn't leaking anywhere. It was solid in the morning. Gauges didn't move

ESh

What are the pressures now?

heuster

I will have to hook everything back up and check what the pressures are during the hot time of the day - I have been avoiding going out in the 115 degrees again to do it. I'll keep you posted

loliwin55

Houston it’s 105 degrees and during the day it’s cool but even warmer at idle. What’s the max low side should be