knock sensor trouble

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Old Mar 12, 2007 | 10:27 AM
  #1  
03TL_S's Avatar
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2006 TL-S.C. 6mt
 
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From: Jacksonville, FL
knock sensor trouble

ive been told to reconnect the knock/map wire back to stock?-by mmcv
(the comptech s/c has caused me to throw a knock sensor 1 code.)
its bucking and surging real bad.
any s/c guys here know what to do, or have any Cali shop phone numbers where i can call them and break down what wire to relocate?
prec
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Old Mar 12, 2007 | 12:20 PM
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tehLEGOman
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...i just passed through jacksonville yesterday on 95 north....thought about gettin in contact with you to check out your TL.

I'm not sure what to tell you other than have everything connected as the directions indicate. I haven't had any check engine light problems besides a miserable evaporative emmisions control leak that isn't detrimental to anything besides passing inspection.
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Old Mar 12, 2007 | 01:27 PM
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yeah im goin crazy, i really just need to know what wire to bypass from the acm, directly back into the ecu (knock sensor wire) cant determine the color
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Old Mar 12, 2007 | 03:22 PM
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knock sensor wire is on terminal B6. The wire is RED/BLUE from ECU and Black/White and White/Black from the ACM.
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Old Mar 12, 2007 | 03:47 PM
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lookinco. the TL genius! i'll let you know how it works
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Old Mar 12, 2007 | 03:52 PM
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LOOKINCO---
is there anyway i can call you on your cell real quick? i am still confused, or in detail explain what i need to do to bypass this wire?pm me
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Old Mar 12, 2007 | 04:50 PM
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i also have this problem and have been lookin for a way to fix it..when the charger was 1t installed it worked fine and then i was about to run a 350z and the stupid light comes on so i was like damn...and when i checked it..it was the knock sensor.. thanks for the wire code..
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Old Mar 12, 2007 | 05:00 PM
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all u have to do is solder back the red/blue wire from the ecm to the red/blue to the engine??
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Old Mar 12, 2007 | 05:08 PM
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just waitin on the professional remedy,,,,=)
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Old Mar 12, 2007 | 07:06 PM
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Yes, just hook the RED/BLUE wire back up together.

One thing you guys should check to see if your engine is hitting / rubbing on anything that could case a vibration. The knock sensor is very sensitive to vibration and noise and would throw the code if it senses anything irregular.

I had the code before and I found out that my Greddy strut bar was hitting the bolt on the intake manifold. As soon as I raised the strut bar, no more knock sensor code.

Hope it helps!
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Old Mar 12, 2007 | 07:47 PM
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Originally Posted by lookinco
Yes, just hook the RED/BLUE wire back up together.

One thing you guys should check to see if your engine is hitting / rubbing on anything that could case a vibration. The knock sensor is very sensitive to vibration and noise and would throw the code if it senses anything irregular.

I had the code before and I found out that my Greddy strut bar was hitting the bolt on the intake manifold. As soon as I raised the strut bar, no more knock sensor code.

Hope it helps!
i'm gonna try with the wires 1st i havent heard n e weird noises comin from n e there and doesnt seem like n e thing is touching it...it sucks having boost and not being able to enjoy it...if this doesnt work it might be bye bye tl..
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Old Mar 13, 2007 | 01:37 AM
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Like I told you. Reconnect the wires back to stock.
Easy fix..Will take you 30 seconds...
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Old Mar 13, 2007 | 08:53 AM
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thing is, i didnt do the install my tech did, using the instructions, so its hard for me to explain to hm what to undo...wish i had a diagram or something
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Old Mar 13, 2007 | 09:09 AM
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Here is the link to the supercharer installation manual which includes the wiring diagram for the comptech ACM.

http://www.comptechusa.com/store/med...-SCKit2005.pdf
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Old Mar 13, 2007 | 02:18 PM
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sorry to be a nag, i just want to do it right---am i re saudering this wire? so i remove the wire from the piggyback and relocate it to the ecu? argh
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Old Mar 13, 2007 | 04:34 PM
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i juss looked at mine and it wasnt soldered...i connected it back with out using the acm and if this works then i'm goin to solder it back
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Old Mar 13, 2007 | 06:10 PM
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well i connected with back to the stock way bypassing the ACM and so far nothing has come on yet... and i've been beatin on the car..pushin it to see if ne cel would pop up but nothing, i'm gonna give it a week or so b4 i go and solder the wires together..

ok now i have a question... what was the point of goin through the ACM for the knock sensor in the 1st place?? is it b/c its more sensetive and it would come on earlier...and would there be a long run problem having the ACM bypassed for the knock sensor?? cuz i think there has to be a reason y it was suppose to be done..
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Old Mar 13, 2007 | 07:49 PM
  #18  
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gonna do it tomarow
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Old Mar 13, 2007 | 10:28 PM
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comptech only had you connect the knock wire into the acm just incase they modify the knock signal. But they did not and never changed the instruc....
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Old Mar 13, 2007 | 10:30 PM
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Thumbs up

Originally Posted by mmcv6
comptech only had you connect the knock wire into the acm just incase they modify the knock signal. But they did not and never changed the instruc....

thank you telling me how to fix it and i also wanna thank lookinco for tellin exactly what wire it was
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Old Mar 13, 2007 | 11:55 PM
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You are welcome.
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Old Mar 14, 2007 | 01:35 AM
  #22  
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super
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Old Mar 14, 2007 | 03:41 PM
  #23  
03TL_S's Avatar
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done!!! thanks lookinCo and everyone else
easy fix

now should i put the high boost pulley on....=)
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