[alia176]

I'm bringing this to the top as my symptoms seem to match the original poster's. However, in my case, the HVAC diagnostic revealed code 14 & 15.

Code 14: evaporator sensor open
Code 15: Refrigerant temp sensor open

I'll check the two connectors on the evap box to make both are connected.

I converted the system to R134a and replaced every single component. The evaporator is about three years old along with a new expansion valve. The compressor is one year old and it's brand new. I did all the work and made sure all sensors are in their respective locations inside the evaporator housing.

Last year, I had an a/c shop recharge the system with R134a and she ran very nicely. This year, I'm having the symptoms described on post #1.

Anyway, I'll report back with my findings. Refrigerant charge is good, maybe a tad too high. I did manage to put in a can of R134a and maybe I shouldn't have. The low side pressure was a tad low for the ambient temp so I sucked in a can. In retrospect, I should've resolved the diagnostic codes before introducing this variable.

Thanks for any inputs.