91 seville - only defrost works for heat


barbied
02-06-2007, 10:01 PM
Could it be a switch? but where?
Thanks a bunch

butch h
02-07-2007, 07:49 PM
My guess would be the climate control module.

DFBonnett
02-08-2007, 10:36 AM
Check the vacuum hoses under the dash. Look in the middle from the driver's side. One may be cracked or disconnected. IIRC, this will cause the system to default to defrost.

HAWG
02-08-2007, 12:10 PM
possibly the programmer or the actuator motor

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