What is the factory specified capacity of the R134a for a 1994 GMC sierra 1500?
What is the R12 freon capacity in lbs of a 1989 Sierra with the 5.7 How much should I expect to have added since the has AC stoped blowing cold air?
Where is the low pressure valve on a 1995 neon air conditioning What is the specified pressure Can you use the new store bought refrigerant or is it freon?
It's only Freon if it was manufactured by DuPont, but to the important things... Your 89 would have had an R12 system from the factory. You can't use R134a in an R12 system unless you do at least a partial retrofit (evacuate all the R12 and compressor oil, replace the orifice tube, replace the accumulator, replace the hose connections, add PAG oil and R134a).
Please note, Freon is the name of R-12 (Dichlorodifluoromethane) which was used prior to the change in 1993 to R134A (hydrofluorocarbon). Your Chevy does not use Freon, it uses the refrigerant R134A. If you are planning on servicing it yourself, I would suggest getting a dispenser with a gauge on it. The one thing you do not want to do is overcharge a system. You can purchase R134A from a local auto parts store.
How do you change freon in a 1999 2.2 liter Chevrolet Cavalier and do you use the R134A kit to do it?
I have personally seen and looked under the hood of a 1994 Chevrolet S10 Blazer (original 1st gen boxy body-style) that came from the factory with R12. It had been converted to R134a at some point, but it had all of the original labels under the hood that said "R12", "Charge R12", and R12 refrigerant under high pressure", etc. This particular 1994 S10 Blazer that I saw was manufactured in October 1993. Any S10 Blazer…
Originally it would have had r12. It could have been swapped over to r134a. The high and low service ports will tell you what you have. Small threaded service ports are r12. Larger quick connect/disconnect service ports are r134a. You should also be mindful that not all R12 to R134a conversions were done as a complete retrofit, and often a simpler method of replacing connectors, the orifice, and accumulator would be done, which would leave…