A/C is only getting cold on the the two passenger side vents. Driver side vents are not cold at all. Passenger air is very cold. Any ideas??

I checked the refrigerant pressure and its a little confusing... With 65 degree weather, the pressure reads 32 psi. While the AC is running the pressure will drop to 27 psi when some fan or belt engages, then eventually creeps up to 35 psi and stays there for a 30 seconds and the cycle repeats...

Any help is appreciated!!

 

The pressure is suppose to go up when the compressor is not engauged. And its supposed to have more than 35 pounds on the low side. That would make the compressor cycle on and off quickly the ambient temp of 65 is probably the only reason you get cool air ob passenger side its closer to air intake. Id recommend taking it to a ac mechanic if you dont know alot about it. There are different oils and head pressures for different cars and if you put the wrong stuff in it can be costly to replace compressor, condenser, evaporator, drier, and orifice tube. You cant always flush that stuff. And im sure you dont want to replace all of it. Now it its not blowing on driver side its something else. I would always close the passenger vents so i would get more air to driver side but it also stays above 100 here for at least a month most summers.

 

What is the pressure supposed to be on the low side?

 

At 65 degrees it should be about 35 with the comprssor engauged and it should run for several minutes like 15 and kick off and then right back on. With the gauge hooked up with the compressor off it will show line pressure usually up around 90+ then it should quickly go down to 35. If its hotter out side psi will be more. 110 its at 75 on low side. It may be you cycling switch aka low pressure switch is bad. But if the high side is too high it will cause the same symptom. Its usually pretty cheap for a shop to hook up the machine and run a test on the system. If low side is normal and high side is too high there is a blockage if low side is right and high side too low the orifice has blown out.

 

Sorry about the misconception on the psi im always checking them at 90+ and for got about the lower ambient.