Reply to "A/C evaporator valve screen"

NAPA lists a replacement screen for the expansion valve #207366 but for around $30 you can replace the valve.I have been using a flushing system like the one dave2811 is showing for about 4years now without problems.the instructions state you can use shop air or nitrogen with the flush i use shop air also as a compressor wears it releases small particals that end up in the evaperator. You dont have to use the canster,a good blow gun w/rubber tip will work.pour the flush into the large end of the evaperator [reverse flush] about 10oz at a time,shake it around for 2 to 5 min.then blast it out,catch what comes out so you tell when its clean. The instructions say to let the shop air run for 20 to 30 min,to dry up the flush.I take it into the sun or pull the hood down w/engine running to help out.I installed a/c in 6915 last year you can see photos at the detomaso registry.hardest part was finding stryfoam for the evap box.you cant use spray/expanable foam! also evacuate the system for at least 1 hour and use virgin freon,not from a recycling machine