I have a vehicle which the a/c (134a) is not going below 70f. Outside temp 85f. Low side pressure 30 to 35 psi high side 185 psi. I believe thermostatic expansion valve is work (its new)because I see the pressure will hold at 30 then move to 35 psi then a few minutes latter it will return to 30, high side changes accordingly with low side.

The discharge of the expansion valve is a little cold to the touch.

Is the expansion valve out of adjustment? if so would I increase pressure on the spring (turning counterclockwise) or decrease the pressure (turning clockwise)?

to adjust it I have to remove it. Right now the system is void of 134a.