Automatic AC and heater fan stooped working after two days of intermittent problems. Control indicator lights for fan and temperature adjustment also stopped working. Automatic temperature and defroster lights work.
SOURCE: heater control wont heat. AC and fan works fine
The heater core was plugged and took 8 flushes to clean it . Would clean it would stop again. Have heat now .
Thank you everyone for helping.
SOURCE: Heater control and windshield defroster temperature problems
It more and likely is the servo motor (s) that are the problem, when you turn hot to cold and defrost they cycle the vents in conjuction and are a common failure on this model.
The ones that fail are accessible if you remove the right underscuttle panel and the glovebox.
Black motors with a double wire, usually have a red connector on the end.
JPTCAT
SOURCE: No day lights/ no heater/ac fan
Ignition switch doesn't sound right, instead try locating relay,that would be the first thing that I would check.Hope I could help.
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