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So the temperature control on my Dad's '94 Roadmaster is intermittent. Sometimes the display works and sometimes it does not. Is the unit failing or is there something causing this problem. The a/c fan inside the car only works when the unit display is on. It may work for a few minutes and then go blank. Any ideas? I checked all the fuses I know of in the fuse panel inside the car as well as under the hood.

Thanks,
Michael
 

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Unless you have a way of checking the unit, I would suggest getting a donor unit and swapping them out. The donor is not that expensive. With both the unit going blank, and the fan stopping, I would suspect the unit.
 
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