how is you ebay knock sensor holding up?
Thread Starter
Member
Joined: Oct 2010
Posts: 238
how is you ebay knock sensor holding up?
lol ebay knock sensor is less than $10. it makes our local parts store laughable. anyway, curious of how is your ebay KS is holding up?
there are 2 KS right? got code P0325
there are 2 KS right? got code P0325
Last edited by kel456; Aug 15, 2012 at 04:35 PM.
fair notice disclosure: i presently have oe nissan knock sensors availalbe for $35.00 shipped in the classifieds. now to my post
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating). i believe that the cheap no-name sensors are cheap for a reason; they're cheaply made, with cheaper materials, cheaper production processes and less exacting standards. the cheap sensors are inferior.
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating). i believe that the cheap no-name sensors are cheap for a reason; they're cheaply made, with cheaper materials, cheaper production processes and less exacting standards. the cheap sensors are inferior.
Junior Member
Joined: May 2012
Posts: 83
From: Illinois
fair notice disclosure: i presently have oe nissan knock sensors availalbe for $35.00 shipped in the classifieds. now to my post
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating). i believe that the cheap no-name sensors are cheap for a reason; they're cheaply made, with cheaper materials, cheaper production processes and less exacting standards. the cheap sensors are inferior.
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating). i believe that the cheap no-name sensors are cheap for a reason; they're cheaply made, with cheaper materials, cheaper production processes and less exacting standards. the cheap sensors are inferior.
Now to the intriguing part...it made a HUGE difference in the performance of my Maxima. My jaw dropped when I got onto the interstate after install, I couldn't believe the improvement in acceleration and power and it took me a few miles to get used to this change with the gas pedal. I love my Maxima all over again
Last edited by Chrono; Aug 17, 2012 at 08:27 PM.
yes, i still have some of these oe knock sensors; i'll pm you details and here's a link to the classifieds ad.
http://forums.maxima.org/4th-generat...0-shipped.html
http://forums.maxima.org/4th-generat...0-shipped.html
A knock sensor is a device that detects the literal knocking sound, motion, and intention on whatever you surface or area you need monitored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
A knock sensor is a device that detects the literal knocking sound, motion, and intention on whatever you surface or area you need monitored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
A knock sensor is a device that detects the literal knocking sound, motion, and intention on whatever you surface or area you need monitored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
Let us say that you want your front door monitored for any knocking. Just install the knock sensor in your Maxima, then place your right hand on the sensor, and use your left hand to point in the general direction of the person, place, or thing that you need monitored. A direct line of sight is preferable, as the knock sensor may get confused at what you are pointing at.
Another example: Need to know the exact moment when you get a package at your door but are not home to receive it? The Maxima Knock Sensor will sense that someone is about to knock on your door, and alert you so that you can immediately start racing home at speeds of 88mph or greater to receive the package on time, BEFORE it even gets to your door, and before the physical knocking begins.
It is a wonderful device that Nissan gave to us, so strange why it would buried so deep in the valley of the engine and hard to configure. Maybe they just do not want it stolen by others? Or perhaps it was placed there so as not to be as easily disturbed...?
/I am so bored.
Of course I do.
With almost 13.5k posts, a very nice Maxima Of the Month icon, and being very well known on the .org, I would assume that you would know what it is, hence why I posted the silly response for some entertainment. I suppose my humor got lost on the internet. My apologies.
With almost 13.5k posts, a very nice Maxima Of the Month icon, and being very well known on the .org, I would assume that you would know what it is, hence why I posted the silly response for some entertainment. I suppose my humor got lost on the internet. My apologies.
Maybe I just didn't find it funny 
Uh, I did not mean to derail this topic so badly... Sorry everyone 
Going back on topic though, how long should I expect knock sensors to last?
I had mine replaced by a mechanic, and it is going bad. Granted, the original OEM one lasted about 7 years I think (got car from Carmax), and this new (unknown manufacturer and quality) one from my mechanic is now approaching 5 years as well.
I might as well replace it myself this time, but Cali emissions equipment is going to be a giant pain in the butt. Based on the thread's reponses of 3years, 4 years, 1year and 6 monthes, all of them still working, I am thinking of trying ebay as well.
Going back on topic though, how long should I expect knock sensors to last?
I had mine replaced by a mechanic, and it is going bad. Granted, the original OEM one lasted about 7 years I think (got car from Carmax), and this new (unknown manufacturer and quality) one from my mechanic is now approaching 5 years as well.
I might as well replace it myself this time, but Cali emissions equipment is going to be a giant pain in the butt. Based on the thread's reponses of 3years, 4 years, 1year and 6 monthes, all of them still working, I am thinking of trying ebay as well.
Last edited by Akiyukio; Aug 24, 2012 at 05:52 AM.
Most threads go OT lol It's fine.
It's probably on its way out. Do you run premium? Maybe you can just bypass it like myself 
Originally Posted by surban1
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating).
Quote:
Originally Posted by surban1
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating).
Originally Posted by surban1
i tried the cheap chinese ebay ks route a while back but discovered that the timing was not advancing as much as it could/should even though there was no code being thrown. with the oe ks, timing is more advanced (especially while accelerating).
Senior Member
Joined: Jan 2006
Posts: 655
From: Silicon Valley
A KS is made of piezo-electric element. Piezo-electric element change mechanical motion to electric pulse or electric pulse to mechanical motion. It is a kind of ceramic like material coated with metal plates on both side. When you bend it, it will generate a voltage off the two plates. In the engine, it will take the engine vibration and send a signal to the ECU. When a pre-ignition (pinging) happens, it sends a big signal to the ECU. With age, it finally cracks or delaminates then it stop sending any signal to the ECU. Then the ECU throws a KS code.
Inside, it is shaped like a washer. The two plate is on top and bottom. The bolt make sure it is tight against the engine and catches all the vibration. The ECU is checking the signal all the time to make sure it is working. When a few big signal off pinging comes, ECU backs off timing advance. When there are no pinging, ECU pushes timing to more advance. When there are no signal, ECU thinks the KS is broken and it also backs off timing.
Some alarm watches use piezo-electric beeper. The watch sends it a signal and the piezo-electric element changes the signal to mechanical motion and emits a beep. Kind of reverse of what a KS does.
I bought a KS at the dealer, not knowing it is available here. When I complaint how expensive it was, they gave me a jobber cost. My KS worked until recently, around 14 years and 150K miles.
Inside, it is shaped like a washer. The two plate is on top and bottom. The bolt make sure it is tight against the engine and catches all the vibration. The ECU is checking the signal all the time to make sure it is working. When a few big signal off pinging comes, ECU backs off timing advance. When there are no pinging, ECU pushes timing to more advance. When there are no signal, ECU thinks the KS is broken and it also backs off timing.
Some alarm watches use piezo-electric beeper. The watch sends it a signal and the piezo-electric element changes the signal to mechanical motion and emits a beep. Kind of reverse of what a KS does.
I bought a KS at the dealer, not knowing it is available here. When I complaint how expensive it was, they gave me a jobber cost. My KS worked until recently, around 14 years and 150K miles.
Last edited by SVI30; Aug 24, 2012 at 11:31 PM.
