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Old 01-24-2013, 04:51 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 24,985
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by CurtSmall View Post
Where are the mounting holes for the two knock sensors?
Type /knock sensor F3 into the bestlinks, and this comes up, which may help:
- How to understand the piezoelectric knock sensor operation (1)

In addition, if that doesn't help, there 'should' be a photo of the knock sensor in-situ here:
- Where to find in situ pictures of common parts of the M54 engine (1)

Please help out by snapping a photo of each of the locations of your knock sensors so that the rest of us benefit (personally I've never dealt with them so this is the best I can offer).
Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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