Login  |  Register
Nissanhelp.com - All About Nissan
Do-It-Yourself Maintenance Owners Manuals Recalls/Campaigns Service Bulletins Service Manuals Nissan OBDII Codes Glossary & Acronyms More...
Member's Ride Photos Stock Photo Gallery
Classifieds - For Sale Classifieds - Wanted To Buy Classifieds - Mechanic Wanted Classifieds - Auto Services Search Auto Parts
Register FAQ Social Groups Mark Forums Read
Knock sensor location? Forums > > Knock sensor location? Knock sensor location?
Forgot Password? Join Us!


Frontier Nissan Frontier/HB/Truck Discussion Forum

Reply
 
Thread Tools Display Modes
  #31  
Old 06-05-2009, 06:11 PM
helazarifi
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by erichantioch View Post
And by the way the "relocation" Is kind of faulty..Its an idea that you can leave the old sensor where it was, and cut the harness.... rewire the correct plug (on the harness)and plug up a new sensor. without taking the intake off...THIS IS JUST TO show the computer that it is recieving the proper value from a "good sensor" It really doesnt matter if it is in the same location...except if you want it to function properly.But naturally any where it can detect a vibration from the engine block would suffice. BUT THE ENGINEERS AT NISSAN PUT IT IN THAT LOCATION FOR A REASON...so do the job properly.Knock sensorstypically dont fail very often and last 50,000 miles
(In Addition)Right about the relocation of the knock sensor, that's going to fix the code message but will prevent the sensor from working properly which is detecting faulty knocks in the combustion chamber. It can be relocated anywhere outside on the engine bock, the one rule is, it should stay on the block and no where else.
Reply With Quote
  #32  
Old 08-28-2009, 09:58 AM
theReverand
Guest
 
Posts: n/a
Default

Sorry to bring this topic back up again, but I am in dire need of help here. I also have a '00 Frontier 3.3l, so this thread seems perfect.

A few months back, my SES light was on, and the computer brought up the knock sensor and piston 6 was misfiring. A simple tune-up (and realization that the last time I had it serviced, someone didn't fully put in that last spark plug) fixed everything. No more misfiring, no more SES light. I passed inspection.

The other day, after driving a bit, and warming up the engine, my truck would begin to sputter when I would accelerate. Before I could get it home, it would sputter at lower and lower RPM until it finally died. It didn't start again until the next morning, when the engine was at its coolest, and the SES light was back on. After about 10 minutes of driving, when the engine warmed back up, it did the same thing until it died.

Not being that great of a mechanic, I went for the easiest solutions first. Bad gas. Drained it, and put high quality expensive stuff in, along with C-Foam. Same thing. Replaced the fuel filter. Same thing. Checked the fuel pump, and it's fine, but my engine obviously isn't getting enough gas. I took it to the mechanic to run it on the computer, and the knock sensor is the only thing it reads is wrong.

The mechanic claims the KS controls the timing as well as fuel injection, and wants over $800 for parts and labor. I've looked around online, and everyone is saying the KS doesn't affect performance. My brother installed an engine in his car and left the KS out, and he said it didn't do anything.

So, pardon for the life story, but is the knock sensor really my problem here? Or is there something else?
Reply With Quote
  #33  
Old 11-08-2009, 12:02 AM
RobSkydiver
Guest
 
Posts: n/a
Default

Sorry to bring this topic back up again, but I am in dire need of help here. I also have a '00 Frontier 3.3l, so this thread seems perfect.

A few months back, my SES light was on, and the computer brought up the knock

The other day, after driving a bit, and warming up the engine, my truck would begin to sputter when I would accelerate. Before I could get it home, it would sputter at lower and lower RPM until it finally died. It didn't start again until the next morning, when the engine was at its coolest, and the SES light was back on. After about 10 minutes of driving, when the engine warmed back up, it did the same thing until it died.

Not being that great of a mechanic, I went for the easiest solutions first. Bad gas. Drained it, and put high quality expensive stuff in, along with C-Foam. Same thing. Replaced the fuel filter. Same thing. Checked the fuel pump, and it's fine, but my engine obviously isn't getting enough gas. I took it to the mechanic to run it on the computer, and the knock sensor is the only thing it reads is wrong.

The mechanic claims the KS controls the timing as well as fuel injection, and wants over $800 for parts and labor. I've looked around online, and everyone is saying the KS doesn't affect performance. My brother installed an engine in his car and left the KS out, and he said it didn't do anything.

So, pardon for the life story, but is the knock sensor really my problem here? Or is there something else?
sensor and piston 6 was misfiring. A simple tune-up (and realization that the last time I had it serviced, someone didn't fully put in that last spark plug) fixed everything. No more misfiring, no more SES light. I passed inspection.


Too bad for me that the last post hasn't been answered, because that's basically what I'm dealing with on my 99 Pathfinder ( KS code and violent sporadic bucking) no S.E.S. light though . It just took me over two days just for me to get the upper intake off, now that it's off, where is the knock sensor? If I had known that I could have relocated it, I would have tried that first. I wasted the first day trying to extract a stripped hex screw. Hex screws are a bad design for use on a futon, Why in the Hell would Nissan use hex screws anywhere on the engine? And what's with using screws on some of the brackets? Today I spent the day removing all of the hoses, vacuum lines and wires on the back of the upper intake manifold plenum, man those hose clips are hard to squeeze/reach. I guess it would have been better to cut / replace all of the hoses.
Tomorrow I will spend the day locating the placement of the knock sensor. Thanks to the post on relocating the KS, I now know which wires to follow. I'm waaaay out of my league on this repair, the Haynes manual made it seem like there was nothing to it, they left out quite a few steps, like needing a 30mm wrench to remove the exhaust pipe (thingy). I just hope I'll be able to put it all back together.
P.S. Can I re-use the gasket if I clean it up, or do I need a new one? Do I have to remove the lower intake? the book didn't mention anything about that, it just mentions that it's under the upper intake.
Thanks.
Reply With Quote
  #34  
Old 04-02-2010, 01:30 AM
erichantioch
Guest
 
Posts: n/a
Default knock sensor location

it is under the intake manifold and yes it is a lot of work to replace.Personally i wouldnt have replaced mine except for the fact that it kept showing a trouble code which prevented me from get a smog certificate and of course being able to register my truck. I live in california and our smog laws are more stringent than the other states so i had no alternative.The faulty knock sensor never made a difference in how my truck ran and there was no difference after i replaced it except i was able to pass smog (this was not because of emissions but it showed as "check engine" and the trouble code)
Reply With Quote
  #35  
Old 04-02-2010, 01:35 AM
erichantioch
Guest
 
Posts: n/a
Default

yes the lower intake must come off and you need new gaskets for the intake/head ive gotten by with re-using the upper-to-lower intake but dont recfomend it.the new knock sensor will come with a gasket so no worries.the sensor itself is attatched to the block in the valley under the intake (lower) with a single bolt thru the center of the sensor which looks roughly like a banjo
Reply With Quote
  #36  
Old 04-26-2010, 02:24 AM
Richie06 Richie06 is offline
Registered User
2006 Xterra
 
Join Date: Feb 2009
Posts: 17
Default B: the two grounds

Thank you for that input. I would like to go with B and check that those two grounds are clean and secure. Would you please tell me where they connect on the intake and how I can identify them? Thanks
Reply With Quote
  #37  
Old 09-16-2010, 09:16 AM
reyesaur
Guest
 
Posts: n/a
Default

THANKS; I have that problem, but my engine is runing normail there is no vibrations nor making any noise. I will have to check the wires and see if they are making a good connection.

Aurelio (Rey) Reyes
Cell (808) 375-0872
save MONEY on your electric bill www.reyesaur.joinambit.com
Are you MONEY motivated check www.reyesaur.energy526.com
the fastest growing company in the USA
http://www.msnbc.msn.com/id/38836762/ns/business-small_business/
Reply With Quote
  #38  
Old 09-16-2010, 09:43 AM
reyesaur
Guest
 
Posts: n/a
Thumbs up THANKS

THANKS
Quote:
Originally Posted by erichantioch View Post
Oh and by the way the only thing that will give you a bad code is if A:the sensor is bad,B:the two grounds at the intake manifold that are the engine control grounds (from the harness) are not getting a good ground or C:something that is making a serious vibration repetively(such as a loose flywheel or a broken harmonic balancer ect.)
Reply With Quote
  #39  
Old 02-15-2011, 11:11 AM
JRODRIGUEZ9699
Guest
 
Posts: n/a
Default

With 165000 miles is the knock sensor just something that is routinely just needs to be replaced OR CAN THERE BE SOMETHING WRONG WITH MOTOR
Reply With Quote
  #40  
Old 02-17-2011, 05:17 AM
JRODRIGUEZ9699
Guest
 
Posts: n/a
Default

Quote:
Originally Posted by joshhays View Post
i was just wondering what they charged you to fix the problem you had...thank you.
i am wondering what year is this xterra mine is an 2002
Reply With Quote
  #41  
Old 06-03-2011, 10:32 AM
SilverBlack Frontier
Guest
 
Posts: n/a
Question Knock Sensor Replacement + Misc parts

Quote:
Originally Posted by tech22 View Post
On the block, in the valley, under the intake manifold. You read correct. Not very easy to get to .
I now have this wonderful Knock sensor issue on my '01 SC Frontier. (The engine does not actually have knock) After finding this site and reading through manuals and many posts I have decided to go in and replace the knock sensor. I am wondering in you all have advice on what else I should replace while I am in there e.g. intake manifolds, gaskets, spark plugs, wiring/harnesses etc. I know there are certain mile ratings for specific parrts, but I want to just do it all while I am in getting this done.

Thank you all for posting on this site. Any help would be greatly appreciated!
Reply With Quote
  #42  
Old 06-07-2011, 07:48 AM
operavoice operavoice is offline
Registered User
2004 Frontier King Cab
 
Join Date: Dec 2009
Posts: 24
Default

I just want to drop my $0.02 in here, if you have anywhere between 80k-120k on your truck, you have a knock sensor code, and truck is running like crap, not only do you need to replace the knock sensor, but you should also check your distributor.

My distributor puked out about the same time as the knock sensor.
I replaced the knock sensor using the knock sensor relocation, and have not had a problem with it in 15k miles. I replaced the distributor last year in September.

You will want to check this ASAP, because a failing or failed distributor can cause another fun problem that I am dealing with right now. (clogged Catalytic Converters)

And clogged Cats do NOT have a cheap work around, especially on a 2004 California model. . .
Reply With Quote
  #43  
Old 06-07-2011, 10:30 AM
SilverBlack Frontier
Guest
 
Posts: n/a
Thumbs up Thanks Opera Voice

Thanks Opera Voice! My truck is above 120k, so I will replace the distributor and related items while I am in there.
Best of luck to you on your cat converters.

Quote:
Originally Posted by operavoice View Post
I just want to drop my $0.02 in here, if you have anywhere between 80k-120k on your truck, you have a knock sensor code, and truck is running like crap, not only do you need to replace the knock sensor, but you should also check your distributor.

My distributor puked out about the same time as the knock sensor.
I replaced the knock sensor using the knock sensor relocation, and have not had a problem with it in 15k miles. I replaced the distributor last year in September.

You will want to check this ASAP, because a failing or failed distributor can cause another fun problem that I am dealing with right now. (clogged Catalytic Converters)

And clogged Cats do NOT have a cheap work around, especially on a 2004 California model. . .
Reply With Quote
  #44  
Old 06-07-2011, 01:12 PM
operavoice operavoice is offline
Registered User
2004 Frontier King Cab
 
Join Date: Dec 2009
Posts: 24
Default

Have the distributor tested first.

If you have an OBD2 tester with life feed capability, you can test it yourself. My distributor was showing between 20-25 degrees of timing retardation (yup, my distributor was being retarded), which led me to my first clue that there was an issue.

Also, if you have a timing light, you can check the timing marks.
They are not normally dead on with the 3.3L engine, but with a bad distributor, your timing marks can jump around all over the place.
Reply With Quote
  #45  
Old 08-02-2011, 11:12 AM
buzz8892
Guest
 
Posts: n/a
Default

I have an 04 xterra with 160,000 plus on it just got knock sensor how hard is it to change?
Reply With Quote
Reply

Tags
knock, location, sensor

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 11:49 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO v2.0.42 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.