WHAT IS A KNOCK SENSOR ?

  • Tiny
  • Anonymous
  • 2002 Kia Spectra
  • 77,000 miles

What is a knock sensor?

Saturday, March 23rd, 2013 AT 5:25 AM

1 Reply

  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

A knock sensor detects vibration in the engine set off by detonation caused by igniting timing problems or other tune related issues, it sends a signal to the ecu to alter ignition timing, when they fail you often have a rattle from the engine on acceleration, this is engine ping due to incorrect timing.

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Saturday, March 23rd, 2013 AT 10:49 AM

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