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Old 11-04-2018, 10:30 PM
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lsmalley lsmalley is online now
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Join Date: Oct 2006
Location: California
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Quote:
Originally Posted by RPM55 View Post
You need to check to be sure the speed sensor on the compressor is putting out a voltage when the compressor is running. The MAS relay needs this signal to keep the clutch engaged. The value should be greater than .25v at idle.
I am getting no voltage at the rpm sensor with compressor running.
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1990 190E 3.0L
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