Knock sensor testing without running engine
Moderators: jsmcortina, muythaibxr
Knock sensor testing without running engine
Is there any way to see a readout of the knock sensor data without running the engine. My motor is at the machine shop still and i want to test out my knock sensor wiring before I wrap it all up. Is there any way to output just raw data?
MS3/3x. MS3 knock module.
MS3/3x. MS3 knock module.
Re: Knock sensor testing without running engine
As the sensor is simply a piezo resistor you could place it against any machinery to detect a frequency or sound. It won't be accurate to adjust window or sensitivity but may give enough output to tell if it's responding. Trouble is I doubt if MS would display waveform as it only reacts to a threshold vs rpm. Could you attach to another engine block for testing?
Jim
Jim
Toyota MR2 98 3sgte
MSPNP2 with 3.57 mainboard
Innovate WB O2 & soon to be external GM 3 bar MAP
FTDI USB interface on SD Android 5.1 head unit
TD05SL2-18g with external WG
HKS EBC running 17psi boost.
A2W IC with WI 50/50 meth/water
MSPNP2 with 3.57 mainboard
Innovate WB O2 & soon to be external GM 3 bar MAP
FTDI USB interface on SD Android 5.1 head unit
TD05SL2-18g with external WG
HKS EBC running 17psi boost.
A2W IC with WI 50/50 meth/water
Re: Knock sensor testing without running engine
It just reads zero. I'm wondering if thats because the engine isn't running.
Re: Knock sensor testing without running engine
tap the block lightly with a hammer. Should react.
Re: Knock sensor testing without running engine
So it should react even with the engine not running?
-
- Super MS/Extra'er
- Posts: 17499
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Knock sensor testing without running engine
MS3 knock sensing only listens during a specified crank angle. You'd have to send it a simulated RPM signal, possibly with a JimStim.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: Knock sensor testing without running engine
Ok that was my worry. Thanks for clearing that up Matt.
Re: Knock sensor testing without running engine
Yes, but I should have mentioned that you need to listen to it with a headphone.aidandj wrote:So it should react even with the engine not running?
Re: Knock sensor testing without running engine
I don't have headphones. Its an MS3 knock module. I trust that the knock sensor is working, but want to check the knock module and subsequent wiring.
Re: Knock sensor testing without running engine
get the engine running en then tap the block slightly with a hammer in the area where the sensor is. And don't destroy anything of course.
Re: Knock sensor testing without running engine
Yes I know. My question was whether or not I could do it with the engine not running.
Re: Knock sensor testing without running engine
Is there an answer to this? I am also wondering the same and have hunted around to no avail. At least able to log it to show that the knock signal pulls low or whatever?
87 Dodge Daytona Turbo 2.2 A555 MS2E
99 Dodge Dakota 4X4 410CI 46RE
94 Mustang SB427 T56 FastXFI
99 Dodge Dakota 4X4 410CI 46RE
94 Mustang SB427 T56 FastXFI
-
- Site Admin
- Posts: 39585
- Joined: Mon May 03, 2004 1:34 am
- Location: Birmingham, UK
- Contact:
Re: Knock sensor testing without running engine
See Matt's answer.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".