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Has anyone taken one apart and done a failure analysis on the 3 or 4 pin part?

Mike Sylvester
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Bernie wrote:

Phil,

My experience over the years on 4 Audis, re: 3 pin vs 4 pin MFTS, has been
that the 3 pin "passive" sensor is the more reliable of the two.  Further, I
believe that the 4 pin "active" version was the original factory installed
unit and that the 3 pin version was later made available by VDO to replace
the problematic 4 pin MFTS.  ??

Bernie
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