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Old 03-13-2002, 12:18 PM
Posts: n/a
From my 93 300E, I always thought the speed sensor was to shut off the compressor if it was jammed. In other words, the circuitry looks at the speed sensor and if it is not turning at the proper speed, it will not engage the clutch. This is so that all the other things being driven by the serpentine belt, like the water pump and alternator, to continue to operate. I seem to remember seeing the specs one time but I cannot find it now.
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