R12 and I’m Tired of Sweatin’ - The 1947 - Present Chevrolet & GMC Truck Message Board Network

44SAA · 02-18-2019, 11:50 PM

I just completed a heater core swap on the ol 1980 and it can blow some serious hot air. Time to work on the defunct AC system. PO said AC has a leak(s). When I bought the truck the PO gave me about 20lbs of R12- thus I have zero interest in R134 conversion. Truck blows hard but only ambient temp.
Questions:
Is it possible to perform a leak check without charging w R12 first?
Can shops still leak check for a R12 system?

Thank you

02-18-2019, 11:50 PM	#1
44SAA Registered User Join Date: Apr 2017 Location: Fort Worth Posts: 111	R12 and I’m Tired of Sweatin’ I just completed a heater core swap on the ol 1980 and it can blow some serious hot air. Time to work on the defunct AC system. PO said AC has a leak(s). When I bought the truck the PO gave me about 20lbs of R12- thus I have zero interest in R134 conversion. Truck blows hard but only ambient temp. Questions: Is it possible to perform a leak check without charging w R12 first? Can shops still leak check for a R12 system? Thank you



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