Rough numbers with compressor running on a hot day, maybe 60 or so on the low side and a few hundred psi on the high side.
ps here's a few scenarios i can think of, if there are any other posiblities, others can chime right in, I haven't personally had to much problems in this regard:
If the expansion valve were blocked, you'd have very high high side and little or no pressure on the low side. If the expansion valve is stuck wide open, i'd assume both the low and high side would be near equal. If the compressor "compression" were low (worn out compressor) I'd assume both pressures would be too low, although there would be a difference, the high side should still be higher than the low side.
Last edited by Gilly; 07-08-2002 at 02:28 AM.