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-   -   97 z3 1.9 knock senser (

nitrydr1600 12-29-2012 11:12 AM

97 z3 1.9 knock senser
where is this thing located if im standing in front of the vehicle... 2 codes 325 330 both leadind to knock senser

Monolith 12-29-2012 01:46 PM

There's two knock sensors, both on the driver's side of the engine block under the intake manifold.

#18 is the sensor wire:

nitrydr1600 12-29-2012 01:52 PM

can i get to these without pulling the intake back off?

Monolith 12-29-2012 03:00 PM

I've only heard rumors of people doing that. The sensors need to be torqued down to a specific value and you should keep their orientation the same as the factory install. Would be very tough to do that with the intake installed.

nitrydr1600 12-29-2012 03:41 PM

wholy **** this car just keeps getting more interesting

vintage42 12-29-2012 05:13 PM

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:

vintage42 12-30-2012 05:25 AM

Better search for bentley bmw 3-series _service_manual(e36).pdf
And here's the upper manifold removed:

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