Hello All, Have a R134 system (2004 Jeep) that vacuumed down to 1000 Microns. Closed valves and after 20 Minutes, rose to 1500 Microns. Any input on the result would be appreciated. Nitrogen pressure test showed High-side valve-core and suction line leaking.

Shorted the pressure switch and compressor engages? And you had leakage? I think that you still have a leak. My guess is that some shop in Colorado Springs area will be able to do R-12 - the refrigerant must match your refrigerant oil - call independent shops, see if there's a real AC shop around, ...

Ladies, Gentlemen, Have a situation. Was having some work done on a 90 1.6L 220k mi. Mazda & Tech says very little R12 escaped while he was working on a coolant line. Says he took the protective cap off to get at a coolant line, and hit the Schrader valve a couple times. A/C worked fine prior t...

Is the system working now? You've mixed refrigerants. So if working, don;t mess with it and wait until it fails. Then clean system and go back to R12. No not working now. Worked two days real good then nothing. Compressor does not engage unless the pressure switch is shorted/ jumped. This guy was n...

Through the Schrader Valve. No adapters. Said it would be fine.

Ladies, Gentlemen, Have a situation. Was having some work done on a 90 1.6L 220k mi. Mazda & Tech says very little R12 escaped while he was working on a coolant line. Says he took the protective cap off to get at a coolant line, and hit the Schrader valve a couple times. A/C worked fine prior to...

Introduction; Hello All, name here is George. Appreciate all making this forum possible. Mechanically inclined other than A/C. If I were to do a school, it would be A/C. Might take a night course because I see the value in the field, and A/C just plain interests me. Automotive A/C would be my greate...