can you really bypass the knock sensor by just grounding the respective pin?
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From: gravity rides everything...everything will fall, se GA/ne FL
can you really bypass the knock sensor by just grounding the respective pin?
i heard this but don't know if it works? anyone know for sure? thanks.
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From: Redwood City, Ca
Re: can you really bypass the knock sensor by just grounding the respective pin? (not so civic)
Probably not, but I'd like to know for sure.
Im guessing the knock sensor is a resistor based sensor.
Im guessing the knock sensor is a resistor based sensor.
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From: Cincinnati,, Oh
Re: can you really bypass the knock sensor by just grounding the respective pin? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">
Im guessing the knock sensor is a resistor based sensor.</TD></TR></TABLE>
Here's a general description from Honda:
The knock sensor is mounted on the cylinder block and detects engine knocking. The vibration caused by knocking are con-verted into electrical signals through the piezo ceramic element. The engine control module (ECM)/powertrain control mod-ule (PCM) controls the ignition timing based on the electrical signals. If the signal from the knock sensor do not vary for a set time period, the ECM/PCM detects a malfunction and stores a DTC.
Im guessing the knock sensor is a resistor based sensor.</TD></TR></TABLE>
Here's a general description from Honda:
The knock sensor is mounted on the cylinder block and detects engine knocking. The vibration caused by knocking are con-verted into electrical signals through the piezo ceramic element. The engine control module (ECM)/powertrain control mod-ule (PCM) controls the ignition timing based on the electrical signals. If the signal from the knock sensor do not vary for a set time period, the ECM/PCM detects a malfunction and stores a DTC.
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From: Gresham, Oregon, USA
Re: can you really bypass the knock sensor by just grounding the respective pin? (Chiovnidca)
Chiovnidca covered it just how it is... On an occiliscope a knock detected by the KS looks something very similar to alternating current (AC) Anyways the easiest way to actually bypass the sensor is to connect it up just it normally would be to the ECU then ground the end which is normally threaded into the block... I really wouldn't worry about it tho... A stock KS/ECU does nothing to stop your motor blowing up if detonation, etc. occurs... If you want to have a reliable system for this then look into a J&S safeguard... Just my $0.02... Latez
EDIT: I've done this before and it's worked fine....
Modified by Kataku2K3 at 10:38 AM 5/6/2003
EDIT: I've done this before and it's worked fine....
Modified by Kataku2K3 at 10:38 AM 5/6/2003
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From: Detroit, MI, USA
Re: can you really bypass the knock sensor by just grounding the respective pin? (Kataku2K3)
No, you cannot fool the ECU by grounding the Knock Sensor pin. I've tried that. You also can't fool it by using a 1k ohm resistor to ground. I just got back from driving with a resistor hooked up like that and it dosen't work either. The ECU MUST see "normal" signals from the KS in order to believe it's working correctly and not set a code.
The knock sensor is not a "switch" or potentiometer with a normal resistance you can replace with a hard resistor. It has a piezo disc inside that generates it's own very small oscillative voltages depending on how it's vibrating.
Hard to fool. I'm going to buy a new knock sensor or have my P28 chipped for JDM B16A SiRII.
Good luck all.
Dougal Walker
The knock sensor is not a "switch" or potentiometer with a normal resistance you can replace with a hard resistor. It has a piezo disc inside that generates it's own very small oscillative voltages depending on how it's vibrating.
Hard to fool. I'm going to buy a new knock sensor or have my P28 chipped for JDM B16A SiRII.
Good luck all.
Dougal Walker
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