OCPTY knock sensor with harness fit for 1990-1996 for Infiniti Q45 4.5L1997-2000 for Infiniti QX4 3.3L1993-1998 for Mercury Villager 3.0L1995-1998 for Nissan 200SX 2.0L

A knock sensor detects abnormal vibrations characteristic of spark knock,and then signals the computer to retard ignition timing accordingly.Knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged.


How to test the knock sensor:
1?Use manufacturer data to identify the knock sensor output circuit.
2?ConnectPicoScope channel Ato the Knock Sensor output circuit.
3?Minimise the help page and with the example waveform on your screenPicoScopehas 4?already selected suitable scales for you to capture a waveform.
5?Start the scope to see live data.
6?Simulate an engine knock bytapping lightly on the engine block with a metallic objectand observe your screen.
7?With your waveform on screen stop the scope.
8?Use the Waveform Buffer, Zoom and Measuring tools to examine your waveform.


Replacement for:
1993-1998 Mercury Villager
1995-1998 Nissan 200SX
1991-1998 Nissan 240SX
1990-1996 Nissan 300ZX
1993-2001 Nissan Altima
1990-1994 Nissan D21
1995-2004 Nissan Pickup
1987-2000 Nissan Pathfinder
1993-1998 Nissan Quest
2000-2004 Nissan Xterra
1991-2001 Nissan Sentra
1990-2001 Infiniti Q45
1991-2002 Infiniti G20
1996-2001 Infiniti I30
1993-1997 Infiniti J30
1997-2000 Infiniti QX4



Package Including
1 knock sensor with durable harness