Originally Posted by perryg114
Well Freon is no longer made and much harder to get. 134A is the most common and something you can go to any autoparts store to get or Walmart for that matter. You will need to replace the dryer and maybe the expansion valve or orfice. You will need to charge it with a different oil as well. Most of the oil is in the dryer so no real need to flush.
I bolted on a modern generic condenser and got it plumbed today. Drier was replaced, system flushed and tech began to pump in the 134a. The system would not fully circulate the new refrigerant. The expansion valve is clogged up. Everything else checks out as good. Frigidaire compressor works on the output side.Most likely the compressor is fine.
Question.... how difficult is the expansion valve to get to and replace?
It seems to be under the dash and hard to reach. I can't touch it for sure. Seems to be in a "black box." Tech says that my A/C unit may be an aftermarket type installed soon after original purchase.
Are we talking removing the dashboard to get at the expansion valve? Yikes!!!