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Old 05-18-2000, 07:39 AM   #1
TMR Impreza
Scooby Specialist
Member#: 168
Join Date: Aug 1999
Chapter/Region: SCIC
Location: San Pedro
2011 M3 and 328i
white and black

Question Has anyone removed the stock Knock sensor??

Just wondering if anyone has??

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Old 05-18-2000, 10:04 AM   #2
Scooby Specialist
Member#: 420
Join Date: Oct 1999
Chapter/Region: SCIC
Location: The LBC, CA, USA
2001 Cr-V


You know, considering we're using the ITC and the AFC - why not? Are you thinking about another sensor, or going without (a little sketchy, maybe) I'm wondering if the knock sensor triggers because of my advanced timing. I'd like to have some indication of knock without the ECU necessarily getting in on the action. - there's gotta be more power in there.
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Old 05-18-2000, 11:24 AM   #3
Member#: 85
Join Date: Jul 1999
Chapter/Region: SCIC
Location: www.themonkeystrunk.com

Chris I can see you right now with a modified stethascope attached to the cylinder head run to the interior of the car driving around listening for knock while crusing. (I know that this could work but why do it?) TMR I need to talk to you as I want to get some parts from you! E-mail [email protected] or call me as I want to try and get them this weekend if possible.
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Old 05-18-2000, 02:50 PM   #4
Scooby Newbie
Member#: 19
Join Date: Jun 1999
Location: Dallas, TX

removing knock sensor causes limp-home mode. if you find away around this, then you're set.

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Old 05-18-2000, 03:40 PM   #5

Although I wouldn't recommend it you could just remove the Knock Sensor, plug the hole and then zip tie it(still plugged in) to a wiring harness. I would try the rubber isolator first if I were going to remove mine..which I'm not.

99' RSt
Old 05-18-2000, 03:53 PM   #6
Scooby Specialist
Member#: 607
Join Date: Dec 1999
Location: SF Bay Area, CA


I don't think that will work. I beleive the stock ECU requires some type of active signal from the knock sensor to keep it out of limp home. I could be wrong though...

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Old 05-18-2000, 04:54 PM   #7
Scooby Newbie
Member#: 670
Join Date: Dec 1999
Chapter/Region: TXIC
Location: Austin, the Republic of Texas

You might also try measuring the resistance across the sensor and just unplug the harness from the sensor and plug in the proper resistor to the harness. I don't know the resistance off the top of my head but it shouldn't take more than a few seconds to find out. The computer will think it's there and I don't think it would throw any codes but I haven't tried it yet.

We use to do that all the time with RX-7s after installing a J&S. The stock knock sensor sometimes reacts to things that aren't really knock. I'd put more faith in the J&S anyday.

And hey, if you have J&S, you could put your sensor right in the stock location. Maybe Subaru found that to be the "optimal" knock sensing location...who knows!

Have fun,
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Old 05-19-2000, 06:52 PM   #8
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Member#: 1510
Join Date: May 2000
Location: granby, Canada, Quebec

Remove the knock sensor from it's original place.

Try to connect a wire directly from the negative pole of your baterry to the knock sensor.

It will works......

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