Is it genius or pure laziness?

[SteveTheTech]

So recently at work I was very bored and pondering the ever present pending Knock Sensor DTC code. In my rationale I would ideally like to sell this car (the car and I are fighting about the driver window currently) and just for me I like everything to work...perfectly but I am very cheap. However that does not apply when it comes to safety items, as a DIYer you need to always make sure your car is safe to yourself and others. :1

I have read the threads here regarding replacing the knock sensor doing it correctly is more work than I am willing to do for free. For a point of reference I would rather do three timing belts before I do one intake Plus this will actual require the use of my bay at work for far longer as this will inevitably turn into a costly disaster and I will again get to order the last part of it's kind...again, that's another thread.

In my tool box I have a small war chest of Nissan parts for all kinds of things. From my younger days I have a knock senor that is the same resistance spec as the original one. I also have access (sorry guys) to a collection of old damaged wiring harness and unused connectors. Fortunately Nissan used many of the same connectors across models and years, after some hunting I found a connector that would only require minor modification of one of the sides. In the back of the engine harness there is a subharness that connects to the KS. Instead of pulling the manifold (which I have vowed I will not do unless seriously needed (I did the injectors with it installed)) I rewired the KS to the back of the engine and called it a day using a perfect site. I know there are benefits from replacing gaskets and hoses as we travel to the belly of the beast

I didn't actually search for this yet, and I am still working on learning this new software, but I cannot be the first to do this. Old Infinitis love the "if it ain't broke don't fix it" school of thought when it comes to pulling plenums. I have seen many things like go horribly awry with all the best intentions, the reason the majority of us are replacing Knock Sensors is to meet emissions standards not because there is a problem with the engine knocking, nor have the majority of the J30s on the road ever had a knocking code. Working smarter not harder is my mantra all day long.

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As a funny side note I was in M56 new model class recently and I was enjoying a break with some of the other senior Infiniti techs and instructors, they were all laughing that I actually owned and fixed a J willingly. These cars are the weirdest Nissan ever made, and ugliest as voted by Nissan Sport in issue 13 There is something I really like about this car that is making it very hard to give up, I really wish I had three parking spaces.

[yodawill2000]

Can you post a pic for those who want to relocate the KS ?

[thejapino]

95-j30-knock-sensor-relocation-t487512.html

[yodawill2000]

Ive seen that one..
Just wondered where Steve put his. Being an Infiniti Tech and all

[SteveTheTech]

I've been going nuts trying to find pics...that I guess I didn't actually. When I get a chance I'll grab a camera and flash light. I actually removed the old harness from the equation with wire snips and used flameless solder butt connectors. I may be a tech but when it comes to working on my car.....well. I found the wires and a local 12mm bolt that I switched with one an inch longer and wired it together and grabbed a beer.

[yodawill2000]

Same location as the other guy ??

[SteveTheTech]

I don't really know if I went for the same location. I am kinda lazy and I was having no driveability concerns.

So here is where I put it.



It's not pretty but for the ~$25 in parts and hour or so of my time it sure beats pulling the plenum. In my opinion I will know the car is missing before the computer does. A knock from bad gas will never be a concern as long as I own this car, I only use Shell 93. I'll try to get a part number for the connector if any of y'all are interested.

I was a little bored today so I put in some Xenons and replaced the halogen running lights.

I ended up trading a co-worker for a set of whites.

[SteveTheTech]

So I finally had an hour to follow all the links and I realized the information on this sucks.

This is pretty straight forward, it is a two wire element (no 5 volt reference or logic threshold makes relocation a non issue). If you are going to do this locate the correct wires.




Here you can see the basic layout of the circuit. One wire. As long as you tap into the harness after F80 the shielding should remain intact through the remainder of the harness. Make a clean cut and solder (remember this line runs directly to the ecm and could potentially fry it if something goes wrong) bolt it down and check for a code.



If the pics are broken/inop check the album directly. http://picasaweb.google.com/NICOSteveTh ... directlink

Viva La Resitance...to pulling the plenum

[yodawill2000]

Thanks !!
I may do that to hold me over till I pull the plenum to do that valve cover gaskets.
No Pheer Here !!! lol