Toad A/C help needed
I've noticed there are a lot of experienced A/C guys on this forum and hope they can throw some ideas my way.
'99 Grand Vitara, losing 134-A and finally traced to a leaking condensor damaged by the fan..........both replaced in Jan. Not much need for A/C then.
Summer arrives and A/C is warm on hot days..... Outside temp 95F, vent temp 84F at idle, 78F at highway speeds (recycle mode). Pouring cold water on the condensor has no affect. Both high and low pressures are correct. Adding/increasing 134A during testing has no affect.
Output temp on the low pressure line is cool at best (65F) under these conditions so I do not suspect any heater control valve leakage.
Shop condemns the compressor and/or expansion valve but cannot explain the normal pressure readings.
I insisted the unit be evacuated thinking maybe over it's lifetime so much 134A+oil+dye has been installed that 134A may be lacking and oil is keeping pressure normal.
Now I'm grasping straws and hope an experienced A/C guy has some suggestions.
So please help. Soon the snow will fall here and I'll forget untill next summer at which time my Wife will remind me in her own (less then) subtle way.