The knock sensor sub-harness connector is located on the passenger side of the engine compartment next to the intake manifold. Must be checked by observing voltage fluctuations with a voltmeter.
I AM GETTING A OBD CODE ERROR FOR MY 2000 NISSAN QUEST , PO141 AND PO325 ??? HOW DO I FIX IT..
The knock sensor on a 1998 Nissan Quest is also located under intake manifold and yes alot of work but can be done in a day. 120 dollar part and 500 labor at garage but for u at home mechanics just a simple side project.
There are no symptoms. The knock sensor is a passive part that does not do anything if it's not activated. Knock sensors codes on the Villager/Quest are usually caused by some other component, not the sensor itself.
on a 2001, with the 3.3, the knock sensor is under the water crossover pipes, which are under the intake manifold. Pain to change. Take off plenum, intake manifold and there it is, on top of the block between the heads.
It is right on top of the block, you have to remove the manifold and fuel injectors to get to it.
Where is the crankshaft sensor located
Never mind, I got my answer.
With mucho effort, that's how. The sensor is behind the intake manifold, throttle body ect, all of which must be removed. Labor alone will be 5-6 hundred , knock sensor another 150 or so. Good luck.
why does speedometer come on and off ?
If you look at the Drivers side of the motor you will see a wire that leads in under the intake. That wire leads to the knock sensor. The plenum, fuel rails,intake and thermostat housing will need to be removed to get to the sensor.
Its underneath the intake manifold on the left side of the engine (passenger side). This is what killed me with the Quest. In Atlanta, we live under the obligation to do emissions checks. When this little part failed, it costs a bundle just to get it replaced. More than what its worth.
Most likely cause-valvetrain noise, check oil level, pressure, also possible engine knock. If you have a knock sensor, mil should be illuminated