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  Knock Senor with Harness, Mk5/B6 2.0T FSi

06F905377 Knock Senor with Harness, Mk5/B6 2.0T FSi

Part# 06F905377


Product Info Vehicle Applications

The knock sensor responds to spark knock caused by Pre-detonation of the Air/Fuel mixture. As the flame front moves out from the spark plug ignition point, pressure waves in the chamber crash into the piston or cylinder walls resulting in a sound known as a knock or ping. This is caused by using a fuel with a low octane rating, overheating, or over advanced timing. Sometimes it can be caused by hot carbon deposits on the piston or cylinder head that raise compression. The voltage from the knock sensor is monitored by the computer, and when an irregularity is detected, the computer corrects timing.