I'm planing on replacing my faulty A/C temp switch, (and NOT having the aux. fan constantly on.) When doing this I DO plan on replacing the receiver/drier, vacuuming the system, etc. Other than the switch, the a/c works well, no leaks.

THE QUESTION-
While the system is open, is there anything else I should replace "while I'm in there?" expansion valve, pressure switch, etc.

BTW I just got 609 certified yesterday

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!