Thread: AC advice
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emac911 emac911 is online now
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Join Date: Dec 2021
Posts: 253
AC advice

Heres my story. I bought a 88 911 a few years ago. It has less than 10k miles. In 1999 the AC was converted to 134a and the car was parked shortly after and never used again until I bought it. I got it back running and cleaned up. I had the AC charged with 134 and the AC worked fine for the summer. It isn't working now and I assume it has leaked the charge. I would say the charge lasted about a year.

It doesnt appear to have a major leak as it will hold a vac for hours. From research it appears the lines can leak under pressure. My plan is to replace the lines, dryer, and add a low pressure cutoff with the kit from Griffiths.

I am debating on replacing the evaporator. I think I am going to check the condition of the evaporator when I change the lines. If it looks nasty and corroded (or any signs of dye) then order one. My feeling is that it is ok.

Lets say I just replace the lines. What is the best way to deal with the dryer? Is it ok to hook the entire system up and take it to be charged? Or should I mount the dryer and hook it up right before it goes to the AC shop?

As I said, when the system was charged the AC worked well enough for how I am going to use the car, so I really don't have a desire to go full Griffith I just want it to hold freon for more than a season. Thank you.
Old 02-19-2024, 05:20 PM
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