Thank you, MBDOC. I appreciate you pinpointing the problem. I found this thread.

http://www.peachparts.com/shopforum/showthread.php?t=125539&highlight=evaporator+temp+sensor

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)