Repair needed

Tiny
PAUL42066
  • MEMBER
  • 2001 NISSAN QUEST
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 167,000 MILES
What is knock sensor and where is it at
Wednesday, January 26th, 2011 AT 3:58 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Component Description
The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.

Freeze frame data will not be stored in the ECM for the knock sensor. The MIL will not light for knock sensor malfunction. The knock sensor has one trip detection logic.
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Monday, March 14th, 2011 AT 10:39 PM

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