Have a 93 suburban that was partially converted to R134a by previous owner but they didn't change dryer or shrader valves (exploded). I don't want to remove the dash. Is there a special R134a pressure cycle switch that threads on an R12 dryer? R134a dryer won't thread on my R12 evaporator. I just barely got the dash re-installed.
*R12 cycling switch doesn't really work as computer disables AC after to many "hops" of the cycle sensor reporting low pressure.
*R12 cycling switch doesn't really work as computer disables AC after to many "hops" of the cycle sensor reporting low pressure.