Question about 2008 Pontiac G5

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Having problems with knock sensor on 2008 Pontiac g5

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  • Here are some steps to check to make sure it is the knock sensor and not some other issue, and will help you find the location of sensor
    Park your car on a level surface and open the hood. Make sure the engine is in park and the emergency brake is on. Start the car.
  • Step 2Locate the knock sensor on your engine manifold. The knock sensor will be located beneath the intake manifold just about at the middle of the engine. The intake manifold is where the exhaust pipes connect to the engine. It can be located on either side of the engine. The knock sensor will have a wiring harness coming out of the top and be set into the engine block.
  • Step 3Strike the intake manifold above the knock sensor with a crescent wrench, do not hit the sensor itself. Listen to the sound your engine makes, you should hear a small change to the sound of the engine; this is the timing being adjusted by the knock sensor to accommodate the detonation you just created by hitting the manifold. If you do not hear the engine make that adjustment, your knock sensor is not working.

  • Posted on Aug 06, 2010

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