Engine Size: 4.7
Refrigerant Type: r134a
Ambient Temp: 92
Pressure Low: 70
Pressure High: 350
Country of Origin: United States
Low Side (36-51psi normal per Toyota manual)
High Side (275-305psi normal per Toyota manual)
Vent 60F at idle, 50F when driving.
Cloudy sight glass.
The above result is after having done the following:
- recovered the system
- replaced receiver (added .7oz PAG46 per Toyota manual)
- evacuated the system (no leaks detected)
- charged with 36.8oz r134a (37.03 +/- 1.75oz specified per Toyota manual)
Any thoughts on the cause of excess lo/hi pressure with correct r134a charge? Had roughly the same symptoms before the evac/recharge, and thought maybe previous owner had gotten air in the system somehow, but now I am stumped. Too much oil in the system? Expansion valve problem? Clearly I am an amateur, but am here to learn.
Spray a little water on the condenser and see if you pressures drop and you have better cooling. Check that the fan is working correctly also.
We've updated our forums!
Click here to visit the new forum
Copyright © 2016 Arizona Mobile Air Inc.