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Thread: vehicel a/c not getting cold
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05-01-2017, 08:04 AM #1
vehicel a/c not getting cold
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.