Spaz's list is a good summary, but I'll add a couple of E30 specific items:
-Replace the expansion valve. They ALWAYS clog. Don't try to clean it, just chage it because chances are it has a slow leak anyway; too slow of a leak to detect with the vaccuum. The brass fitting on the side comes loose beacue it shrinks/expands at a different rate than the aluminum it's screwed into and eventually won't hold anymore. The design of the valves has been updated so they dont leak anymore when you get a new one.
- There is a small screen/filter in the intake fitting of the compressor. This will probably be clogged. Clean it.
-This isn't required, but I STRONGLY recomend that you change the evap core in the dash. The originals have copper piping that is soldered to the aluminum core. It has the same problem as the brass fitting in the expansion valve; different expansion rates cause them to become a problem. New ones are all aluminum, and as an extra bonus, they ususally come with a new expansion valve attatched anyway.
-Replace the expansion valve. They ALWAYS clog. Don't try to clean it, just chage it because chances are it has a slow leak anyway; too slow of a leak to detect with the vaccuum. The brass fitting on the side comes loose beacue it shrinks/expands at a different rate than the aluminum it's screwed into and eventually won't hold anymore. The design of the valves has been updated so they dont leak anymore when you get a new one.
- There is a small screen/filter in the intake fitting of the compressor. This will probably be clogged. Clean it.
-This isn't required, but I STRONGLY recomend that you change the evap core in the dash. The originals have copper piping that is soldered to the aluminum core. It has the same problem as the brass fitting in the expansion valve; different expansion rates cause them to become a problem. New ones are all aluminum, and as an extra bonus, they ususally come with a new expansion valve attatched anyway.
Comment