I'm a newbie at ac work. So when I hook up my gauge set according to chart at a given ambient temp the in the r12 column it's giving me a low pressure? How do I obtain high pressure info? Thanks.

Looking for a temp / hi low pressure chart for an R12 system. Can a member supply a Linc or pic of a chart. Thanks.

You could not pick a worse vehicle to convert to 134a. Do not convert it. '71 is a POA valve system with the A6 compressor, and had no LPCO. I've read that the POA valve can be re-calibrated for 134a. Will A6 compressor not work with 134a? I've tried to keep it as the original R12'refridgerant but ...

You could not pick a worse vehicle to convert to 134a. Do not convert it. '71 is a POA valve system with the A6 compressor, and had no LPCO. I've read that the POA valve can be re-calibrated for 134a. Will A6 compressor not work with 134a? I've tried to keep it as the original R12'refridgerant but ...

[quote=" I've never done a conversion to R134a, so won't comment on that. But I'd add the UV dye initially, like many manufacturers do, rather that wait until system won't hold pressure or if you find a leak. If compressor "clicks on" (engages), then there's some refrigerant still in ...

Hello All, Newbi to the auto a c forum. I'll get right into it. Limited ac experience. I have a 71 Vette with an original ac setup. When I got the car the ac never worked, but compressor clicks on when set at dash. I know the system has been open to the atmosphere numerous times. I would like to con...