Hello.

I've got a 91 740 wgn a/t. A/C will not blow colder than 70 degrees F (thermometer in center vent) with an ambient temp of aprox. 80 deg. F The compressor does not seem to be cycling--stays on/engauged all the time. Possible low refrigerant pressure? Currently, I have only the ability to read low side: 45 psi w/ engine at idle and A/C on. Can anyone give me the correct high and low side pressures?


Thanks in advance!