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Posted on Oct 27, 2009
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How do I replace the knock sensor? It seems to be underneath the intake manifold. I'm handy but not truly a mechanic, and I would be loathe to try something like this without some sort of detailed instructions. There seems to be not manual one showing the procedure to do this...

  • mark_dempsey Oct 27, 2009

    I may not have said this before, but it's a 2005 Vue 6-cyl 2wd. To reiterate, all the parts guys I talked to (including at the Saturn dealer itself) seem to be of a consensus that it's under the manifold. Is that what you're saying, just from a different direction? I am not questioning your experience, but in the interests of the time it would take, I have to be sure. Thanks for your help, BTW.

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  • Master 543 Answers
  • Posted on Oct 27, 2009
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Well i am a saturn tech,,i would disconnect the battery and remo the starter from underneath the car,,,2 15mm bolts hold it onto the engine,,,disconnect the 2 wires to the starter frist, then after removing the starter then knock sensor is right there 1 13mm bolt and there you go

  • Anonymous Oct 27, 2009

    oh ok sorry i thought you had a 4 cylinder,,,,,,wow youre gonna wish you did,,,yes it is located under the intake manifold and you got some tearing down to get to it.,,,but for the 3.5 liter honda engine,your gonna need to disconnect the battery,remove the intake duct work,,remove the throttle body,remove the pcv hose and brake booster hose,remove the top nuts holding the intake manifold together,and disconnect the 2 IAT sensors,,then remove the inner nut and bolts that hold the intake manifold to the engine,,and pull the manifold straight up and off,,,next,slide off the studs the lower intake manifold spacer bracket,,,your also gonna have to remove the lower intake manifold ,,take all the nuts off the lower manifold and then remove it,,,,youre gonna have to remove the 4 bolts holding the fuel rail onto the manifold, and then pull up on the rail,,dont lose any o-rings for the injectors,,the knock sensor should be right there disconnect the plug and remove it,,,tighten the new sensor to 23 foot lbs. reverse these instructions to reinstal,,,i would put some lube on the orings of the injectors so you dont tear them on install,,,just take youre time and make sure you connect everything up

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Where is the knock sensor on 2003 honda crv

The knock sensor on a 2003 Honda CRV is located on the engine block. Specifically, it is located under the intake manifold, which means it can be difficult to access. Here are the steps to locate and replace the knock sensor on a 2003 Honda CRV:
  1. Disconnect the negative battery cable to prevent electrical shock.
  2. Remove the intake manifold. This involves removing several bolts and electrical connections.
  3. Locate the knock sensor, which is located near the rear of the engine block, under the intake manifold.
  4. Disconnect the electrical connector from the sensor.
  5. Remove the sensor from the engine block. This may require a special tool, depending on the specific design of the sensor.
  6. Install the new knock sensor, making sure it is properly aligned and tightened to the correct torque specification.
  7. Reconnect the electrical connector to the sensor.
  8. Reinstall the intake manifold, making sure all bolts and electrical connections are properly secured.
  9. Reconnect the negative battery cable.
Note that if you are not experienced with working on engines or are unsure of how to proceed, it may be best to seek the assistance of a qualified mechanic to replace the knock sensor on your 2003 Honda CRV.
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Where is knock sensor

This was answered in 2012 by yadayada (Mazda Expert):
"The knock sensor is located under the intake manifold to replace do the following
Disconnect the negative battery cable.
Remove the intake manifold.
Disconnect the sensor connector.
Remove the sensor from the engine block.
Installation is the reverse of the removal procedure
"
My 2 cents ... there might be chance to access the sensor from underneath
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2005 Sebring Touring 2.7. Where is the knock sensor located?

This knock sensor is very difficult to access. It is located between the two cylinder banks, it screws into the cylinder block underneath the intake manifold.

In order to remove the sensor the intake manifold and right cylinder head must be removed.

Nate

I’m happy to assist further over the phone at https://www.6ya.com/expert/nathan_cc888cf971f43e78

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My knock sensor on my 2003 cadillac deville is faulted. How hard and what tools and supplies do I need to replace the knock sensor

  1. Remove the intake manifold.
  1. Disconnect the knock sensor electrical connector.
  1. Remove the knock sensor (KS).
Installation Procedure

    602292.png
    .
  1. Install the knock sensor.Tighten
    Tighten the knock sensor to 25 [n-m] (18 lb ft).
  2. Connect the knock sensor electrical connector.
  3. Reinstall the intake manifold.
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Need to know how to install knock sensors and where they are need diagram. 2005 expedition 5.4 engine

Hello adamjerkins,

It is somewhat complicated to change the knock sensors. There are two of them and they are located under the intake manifold. The intake manifold must be removed. I would recommend tha you replace both while you have the engine apart.

What leads you to believe the knock sensors are bad, I've seen few bad knock sensors? The knock sensor issues more times than not have been caused by other problems.

After you remove the intake manifold disconnect the knock sensor connectors. Remove the bolts and the two knock sensors then replace with new knock sensors tighten the bolts to 15 foot pounds. Reinstall manifold. The total job for an experienced mechanic with tools is about 5 hours. Not a good job for a beginner.


Regards,
netvan
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Diagram available for 01 Nissan Xterra Knock Sensor location?

V6 3.3L The sensor is located underneath the air intake manifold on top of the engine block. This should take an experienced mechanic about 3-4 hours to replace.

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Fig. Engine compartment component locations

Hope this help (remember rated this free help) Good luck.
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Have a 2004 Chevy Silverado need some help. Where is the knock sensor located?

There are two knock sensors on your engine, and they are underneath the intake manifold. You will have to remove the intake to get to the sensors.

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These knock sensors are hard to get into. If thats a V6 it is underneath the intake manifold. make sure you cover the intake port when you take it apart, so a screw or a bolt don't accidentally drops in there.
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Knock sensor location

The knock Sensors are located under the Intake Manifold at the top of your engine. The top will have to be taken off along with the intake manifold. Knock Sensors in past silverados used to have a problem with leaking water that corroded the sensors from washing the engine. Most times when you go to replace the knock sensor you will have to replace both along with the wiring harness that includes the the gaskets the knock sensors are surrounded by. After that you have to check the resistance to make sure you dont have any problems and then reinstall all parts along with a new intake manifold gasket. A good mechanic can do this for you in a day and charge you around $400. If you try to go to some place like a chevy dealer you will pay over $800. This is from experience of just replacing mine 2 weeks ago.
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