The knock sensor is located under the intake manifold, deep in the middle of the motor.There are 2 knock sensors.Both are under intake.
This sensors are to monitor engine and its performance.
This are costly sensors and it takes Approx 3 to 4 hours to replace the knock sensor.
See the diagram below showing location of knock sensor on Infiniti Q45
![graphic](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_v3ScAg_rEsZmobXAPXIfWJntXV6uMc6DeGAgAlfmOZ0jFFzifwTzYrV_Gf7WlF1IBz8v6SR-h6YSmyolb79ZDX6laxPGLJXj2tuJeLrnqlnB2hSRXNWAAiuh1VJJ-pPc9klXf2rgEGdpgH=s0-d)
The car will not start?
Car will not crank?
Car has no spark?
How to troubleshoot car battery?
How to test starter solenoid?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html
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How to test cars starter?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html
How to replace starter in car?
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html
This sensors are to monitor engine and its performance.
This are costly sensors and it takes Approx 3 to 4 hours to replace the knock sensor.
See the diagram below showing location of knock sensor on Infiniti Q45
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For more car related problem troubleshooting:---
This are the sections, you can go through and click the link to read its troubleshooting.
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The car will not start?
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Car will not crank?
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Car has no spark?
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How to troubleshoot car battery?
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