My air is not blowing cold. With the compressor on its colder than ambient air but not by much. Rear air is same as front. Hooked the gauges up and it's showing low side pressure around 50-52 and high side about 230. Ambient air temp around 95. From what I've gathered this is a possible overcharge??? I had the motor replaced in December and had the shop evacuate the lines and recharge. What next?

Hold it at about 2500 rpms and see what it does

Is the compressor actually on? Temp also dictates pressiure whats the temp at testing time. What's the pressure when off and then when it cycles off while running the pressure changes. Turn it to coldest setting lowest fan speed. Turn the air off then back on while watching the compressor clutch make sure it engages and stays on. Blocked orifice tube is common and you have a front and rear on that iirc. The blend door is common also try moving the selector around see if it changes.

Yes compressor is on. When I cut it off the low side rises to about 80 and high drops to around 175. I'll repeat it with the motor above idle. Temp was around 95 when I took the readings.

I'd think it may be overcharged.

I'm no expert, but would write 35 degrees for low side with compressor on is where to shoot for pressure.

God Bless,
David B.

Alright well I checked it again today, ambient temp around 85. At idle high side 175, low around 25, bring it up to 2000 rpm and high is about 200 low around 18 and the compressor clutch releases. Drop rpm and it engages again.

here is a rough chart to go by. Ac is complicated getting to know what your system is doing. And your system will have a spec on the ounces of refrigerant it requires. You should know this spec before ever attempting to charge it. If it's overcharged, your lines will try to freeze and you should be able to note this by feeling the lines. When the system was evacuated, was the drier replaced? If not there's your problem. Anytime the system is drained, a leak has appeared or a compressor is failed, the drier MUST be replaced. The drier is to remove minute moisture in the system. Once the system is opened and moisture from the atmosphere is introduced, the drier is ruined. It simply cannot handle that much moisture. Once the drier is ruined, it cannot do its job properly. Once moisture is in the system, it will get into the compressor, likely cause permanent damage. If that's the case, I would evacuate the system, replace the oraface tube, all o rings, the drier, drain all oil from system, replace oil, pull vacuum to boil out any remaining moisture and to check for leaks. Them I would charge system using the correct amount of refrigerant. Then you'll have ice cold air