Thread: What is this ?
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Old 01-04-2013, 02:42 PM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
Join Date: Jan 2012
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Mein Auto: 1989 525i M20B25
I am almost certain that it is a climate control temp sensor that uses engine vacuum to draw cabin air over the sensor.
It was used on the e28 5 series and discontinued for the e34. Only very few e34's have this sensor since BMW carried it over from the e28.
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