AC Expansion Valve replacement help
i have been having AC problems for a few years now. about 2 yrs ago, the compressor kepy cycling on and off so i replaced the thermo switch and that problem fixed it. about 2 months later, it would only blow cold when it was below 85 degrees...and has been this way ever since. when its hot as hell its cooler having the windows down. the system has refrigerant and i asked a buddy of mine who is a technician at a Nissan dealer and he said it might be the expansion valve because the AC lines dont even sweat. so i figured, awesome ill just change it out and BAM problem fixed. its a $15 part locally and with refrigerant i was looking at about 80 bucks until low and behold i found out where the damn thing is. i intend to clean the evaperator with spirits and replace with new o rings. has anybody ever changed the expansion valve before and if so, how do you open up the housing enouth to take out the evaperator to change out valve.