Air Conditioning/ Heater Problem

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Air Conditioning/ Heater Problem

Postby foytech » Wed May 04, 2016 9:03 pm

Does anyone know how to diagnose a bad Climate Control Head? I have this weird issue. The blend door actuator of my 91 lincoln mark vii was replaced with a known good unit. And, what is happening, is that when i adjust the temperature, it seems to not be sending the message to the blend door actuator. It moves only when it wants to move. I hooked the actuator up to a batter, and it works in both directions without issue. I have already ordered a head unit online, but want to know how to diagnose the one i have for now to see if i can repair the broken one as a back up if that is the case.

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