That's what I was thinking since the IHKA acts as the "relay" for the ac compressor. It would certainly be easier to correct than compressor issues! Thanks for the input!

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Current Rides:
'88 635 CSI (mine)
'02 X5 3.0 ("tank thing")
'01 325CI Convertible (wife's)
'06 325i Sedan (daughter's)
'07 X3 3.0 SAV (other daughter's)
Guess who gets to work on them!