Have successfully converted my van's a/c system to R-134A. 1st attempt blew a
hose after a while. Had them rebuilt with modern barrier hose. I went with an
80% charge but the hi-pressure switch runs the fan on high a lot. The EPA web
site on conversion mentions using a cutoff switch on the compressor to
control excessively high pressures. Anyone have any thoughts on or experience
with this?

Tom Smith
83.5 Westie