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OK, new A/C install with gen2 evaporator, high side 225, low side 25, what should air from evap be? I barely get 65°. R134A
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Inlet to condenser is very hot, outlet is almost at ambient temp so condenser is doing a great job, it is a very large condenser. 968 square inches. Air from evap is same temp regardless of engine rpm. I feel like the expansion valve is restricting the flow to much but everything is new.Low coolant or low coolant flow. Since your testing shows it isnt low coolant and with the high pressure split, Perhaps the TRV(Or somewhere else in the circuit) has an obstruction Which isnt letting the refrigerant flow properly... Are the condenser fans operating and giving good flow thru the condenser?
Well you could pull the TRV, warm its bulb and back-flush it with compressed air...Inlet to condenser is very hot, outlet is almost at ambient temp so condenser is doing a great job, it is a very large condenser. 968 square inches. Air from evap is same temp regardless of engine rpm. I feel like the expansion valve is restricting the flow to much but everything is new.
Exactly. Now I am not yet positive of this but will know tomorrow. What do you think about relocating the TXV bulb to trick it into opening more? I would know if it works by the low side pressure.Well air going around the evap isn't being chilled![]()
No it is not. Well maybe it is but adjusting it made the low side lower psi.Is your metering device adjustable?
Would you agree that a TXV works much better than an AXV? There is a plug on the bottom of the block opposite the control diaphragm. Air out should be at least as low as 40° and maybe as low as 30° in my view. My car is 41° my M35 was 28°, all with 134AOk, well an AXV simply maintains outlet pressure on the evap. So either it is set too low(sure there isnt an adjustment screw on it, that is usually how the low pressure is set to match the flow). Or something else in the system is restricting the flow and the AXV is regulating the evap outlet pressure accordingly. Or it is broke/clogged...
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