The knock sensor is located on the engine block, cylinder head or intake manifold. This is because its function is to sense vibrations caused by engine knock or detonation. The PCM uses this signal to alter the ignition timing and prevent detonation. It will compare this information with its preset tables to identify a valid knock or ping. If a ping is sensed, it will retard the ignition timing to protect the engine from this damaging pre-ignition. The knock sensor is located on the engine block, cylinder head or intake manifold. This is because its function is to sense vibrations caused by engine knock or detonation. The PCM uses this signal to alter the ignition timing and prevent detonation. It will compare this information with its preset tables to identify a valid knock or ping. If a ping is sensed, it will retard the ignition timing to protect the engine from this damaging pre-ignition. Fits the following TOYOTA Models: 4 Runner All 3.4L V6 Engines 1996-2002 Avalon All 3.0L V6 Engines 1995-1999 Camry All 3.0L V6 Engines 1994-2001 T100 Pickup All 3.4L V6 Engines 1995-1998 Tacoma Pickup All 3.4L V6 Engines 1995-2004 Tacoma Pickup All 2.7L 4cyl Engines 1993-1996 Tacoma Pickup All 4.0L V6 Engines 1993-1996 Tundra Pickup All 3.4L V6 Engines 2000-2003 Tundra Pickup All 4.7L V8 Engines 2002-2004 Previa All 2.4L 4cyl Engines 1992-1997 Previa AWD All 2.4L 4cyl Engines 1995 Sienna All 3.0L V6 Engines 1998-1999 Solara All 3.0L V6 Engines 1999 Supra All 3.0L Inline 6 Engines 1995-1998 Fits the following LEXUS Models: ES300 All 3.0L V6 Engines 1994-1999 GS300 All 3.0L Inline 6 Engines 1998-2004 GS400 All 4.0l V8 Engines 1998-2000 LS400 All 4.0L V8 Engines 1998-2000 RX300 All 3.0L V6 Engines 1999 SC400 All 4.0L V8 Engines 1998-2000 You get 2 Pieces!
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