Thinking about converting the 90 to 134a. A DIY job at that but I want to do it right. I've got the vacuum pump and gauge set.
Planning to replace hoses and accumulator, and any o-rings just for good measure.
Would flushing the system be necessary with Ester oil?
Are all new A/C hoses barrier hoses?
I did this years ago with my 82, but only vacuumed it down and put the 134a/oil conversion combo in it. Wasn't really pleased with the results but I do think the compressor was crapping out and stopping up the orfice tube (original reason for service). I'd like this conversion to be better. Compressor is quiet in this car and still holding a small residual R12 charge.
Planning to replace hoses and accumulator, and any o-rings just for good measure.
Would flushing the system be necessary with Ester oil?
Are all new A/C hoses barrier hoses?
I did this years ago with my 82, but only vacuumed it down and put the 134a/oil conversion combo in it. Wasn't really pleased with the results but I do think the compressor was crapping out and stopping up the orfice tube (original reason for service). I'd like this conversion to be better. Compressor is quiet in this car and still holding a small residual R12 charge.
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