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Old 11-19-2019, 03:36 PM
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Join Date: Jun 2008
Posts: 471
New Adventures in Heating & Cooling

Hey guys,

The air coming out of the defrost vents in my 81 380sl, which has an Unwired Tools unit in it, just started changing from hot to warm to cool, while the air in the side vents stays warm, whether I'm driving or stopped at a light.

The engine temp is a steady 80. The radiator and heater hoses are hot, and the aux water pump is working.

Any ideas would be appreciated.


1981 380SL
Chassis: R107.045
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