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Old 03-30-2004, 09:42 AM
Coming back from burnout
Join Date: Jun 1999
Location: in the Pacific Northwest
Posts: 2,274
85 300D What do the two sensors on the A/C drier do?

Its that time--A.C. rebuild time.

I replaced the drier/receiver. When I did so, I overtightened one of the sensors that screws in to the Receiver/Drier (the one with the 4mm thread) and snapped it off.

This sensor has two black wires that connect to it and it mounts to the side of the top of the Receiver drier. (The other sensor has wider thread)

What does this sensor do? Can I still run my system with out it attached, or should I replace it?

85 300D What do the two sensors on the A/C drier do?

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Old 03-30-2004, 12:06 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The one that broke is for the aux fan operation.
The other switch is for compressor operation. Binary switch the closes the circuit above 2bar & below 30 bar.

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