Question about 1997 Nissan Maxima

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Location of knock senor on 97 maxima se

Where is the knock sensor locate and how hard is it to replace? its a vq engine for an 97 maxima se.

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Your knock sensor is located Under the hood, center, front engine area, below intake manifold, mounted on block.


A defective knock sensor may cause engine detonation or reduced spark advance and fuel economy. When a knock sensor is removed and replaced, the sensor must be tightened to its specified torque. If the knock sensor is installed tighter than it should be, it may become too sensitive and provide an excessively high voltage signal, resulting in more spark ****** than required. When the knock sensor is installed looser than it should be, the knock sensor signal will be lower than normal, resulting in engine detonation.

To replace the knock sensor:

  • Disconnect the knock sensor wiring connector.
  • Then, unscrew the sensor.
  • Remove the knock sensor.
  • Reverse the procedures to install the part.

Posted on May 15, 2009

  • Michael Masters
    Michael Masters May 15, 2009

    Its a fairly easy job. not to hard:)

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  • Master
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location of knock senor on 97 maxima se - 2054724.jpg I believe this car takes premium gas. If you are using regular it will knock so try premium and while you at it, add a can of injector cleaner to clean off the injectors.

For the location of the knock sensor go to;
http://www.motorvate.ca/mvp.php/507

Here is something to try. While the engine is idleling, tap on the sensor and see if the engine starts to shake because the ecu is sensing "knocking".

Tip. When removing any screw/bolt, if it has a choice between a using a screwdriver or wrench, use the wrench.

Posted on May 15, 2009

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Posted on Jan 02, 2017

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  1. Raise and safely support the vehicle.
  2. Remove the tire to ease access to the knock sensor.
  3. Remove knock sensor shield
  4. Remove the connector from the knock sensor.
  5. Remove the sensor mounting bolt,
  6. Now remove the knock senor.
  7. To install reverse the steps above and tighten the bolt to 18 pounds torque.
  8. See diagrams for additional help. Note there is one on each side of the engine.

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I failed the emisson's test. I have a 97 Nissan


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