where the heck is the knock sensor on 94 J30?

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mobilefleet
Posts: 5
Joined: Sat May 03, 2008 9:31 am

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car won't start, cranks over and kind of makes puffing noise like it's trying, ECM gives code for knock sensor and also code 51 for "injector analysis", please tell me the knock sensor is accessible without removing the freaking engine...


kbflip02
Posts: 837
Joined: Mon Nov 12, 2007 8:58 am
Car: 1994 Infiniti J30
2006 Infiniti G35x
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mobilefleet wrote:car won't start, cranks over and kind of makes puffing noise like it's trying, ECM gives code for knock sensor and also code 51 for "injector analysis", please tell me the knock sensor is accessible without removing the freaking engine...
hate to tell u but it isnt...u have to remove both upper and lower plenums...there are threads on relocating it...i decided to replace it all together though...plus it gave me an excuse to add a few things while its off...

mobilefleet
Posts: 5
Joined: Sat May 03, 2008 9:31 am

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I have heard of people just disconnecting the harness as well and putting a resistor in its place, what size resistor and where is the harness located that needs to be disconected and jumped across with the resistor?? This car won't start until I do this so help please!!

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yodawill2000
Posts: 3888
Joined: Thu Mar 24, 2005 4:10 pm
Car: 94 Infiniti J30
Location: Grand Prairie TEXAS

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Knock sensor retards the timing.Doubt it would keep the engine from starting.

kbflip02
Posts: 837
Joined: Mon Nov 12, 2007 8:58 am
Car: 1994 Infiniti J30
2006 Infiniti G35x
Contact:

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mobilefleet wrote:I have heard of people just disconnecting the harness as well and putting a resistor in its place, what size resistor and where is the harness located that needs to be disconected and jumped across with the resistor?? This car won't start until I do this so help please!!
zerothread/262883

search is your friend...

if your have code 51 then do a search on it...i know ive seen a few things here and there

jertapper
Posts: 142
Joined: Sun Mar 18, 2007 3:55 pm
Car: 1996 J30
Location: Mobile, AL

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zerothread?id=282494

that has a lot of info about the knock sensor. but the car should run without it working properly. it just goes crazy sluggish at times.


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