Originally Posted by
DBMaster
Good idea. I know about the thermostat. I remember a friend buying a 1986 Accord hatch when they first came out. It was a DX 5-speed. There was an issue with a lot of these cars, initially, with the thermostat allowing the evaporator to freeze. Fortunately, the issue was long since resolved when my car was built in 89.
Here's the thing, though. While it's a good idea to replace the TEV (thermal expansion valve), you might want to do a small amount of research to verify that the same TEV that works well with R-12 will work well with your chosen refrigerant. Mine seems to work fine with Freeze 12, but that does not mean it wouldn't work BETTER with a different TEV.
I only think about this because my job involves purchasing of TEV's for home air conditioning systems and there are MANY. There are also those that are specified for use with R-22 and with R-410a. Maybe the differences are slight, but since you have it torn down to this level...