-200k miles
-91F ambient
-Low side: 42psi
-High side: 220psi
-Vent temp: ~65F
Hello everyone, I am getting 60-70F vent temps on my 4runner. The system was evacuated, vacuumed, and charged by weight. Pressures are 42psi/220psi at 1500rpm. Condenser is clean, fan clutch is GOOD, airflow over the evap is presumably good. Misting the condenser drops pressures to 22psi/120psi, vent temps barely move. I suspected a leaking heater control valve may be trying to heat and cool simultaneously, but I tested the AC on a cooler cloudy day upon a COLD start, and had the same results (before coolant was warmed up).
To me, I have sufficient delta T across the condenser core. I can get those readings later on. Misting it did not make a change in vent temp. I suspect that I might have an issue with the TXV, or perhaps a weak compressor. Is there a way to test each component to know for sure; can a compressor make sufficient high side pressures but lack pumping capacity at the same time?
Comparatively, my brother has the exact same vehicle as me, and gets a consistent 45F vent temp at 1500rpm. Probably closer to 40F while driving. I will note though that his system appears to be a little low on charge because the low side was pulling to 5-15psi during our test, and even cycled the low pressure cut out switch which I thought was somewhat odd on a TXV system.
If I am leaving out any pertinent information, please let me know and I will report back
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