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Old 12-29-2012, 05:13 PM
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vintage42 vintage42 is offline
BMW CCA 1405
Location: Louisville, KY
Join Date: Jun 2007
Posts: 3,752
Mein Auto: 1997 BMW Z3 1.9 5MT
The Bentley Manual page 113-16 says the upper intake manifold must be removed to replace the knock sensors (two on one harness). The upper manifold unbolts from the lower manifold, which remains on the head. You can download the manual. Google Bentley_BMW_3-Series_Service_Manual_(e36) and there will be several sites offering it free.

EDIT: Better search for bentley bmw 3-series _service_manual(e36).pdf

Here's the sensor:
Anyway, go to car-stuff dot com and search for 1997bmwz3knocksensor

Here's some threads on it:

Last edited by vintage42; 12-30-2012 at 05:21 AM. Reason: URL blocked. Need to add .pdf to find downloadable file.
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