1985-1998 [Subscribe to Daily Digest] |
I don't believe there is a water temp valve on the heater core. Only two air mixing flappers controlled by the ACC via servo motors adjust/mix the temp going into the cabin via the ACC unit. With acc set to LOW the flappers only allow cooled air directly from the Evaporator.. no mixing of any sort.
Possibly your flappers are worn (foam sealing edges tend to rot off with age) or possibly the linkage is sloppy or that a(?) servo motor is losing it's accuracy.
posted by 64.180....
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