Question about 1992 Lexus Es 300
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Posted on Jan 02, 2017
HAS TWO KNOCK SENSORS they are both under intake in valley of engine. remove intake and will see two black grommets they are under those best to replace both at same time
Posted on Jan 26, 2009
They are located below the intake manifold, you may have to remove the intake to change them. The sensors may be shot, they have a problem with water puddling in their mounting wells, after changing, seal the sensors with an RTV to keep water out of the wells
The Knock Sensor (KS) system detects engine pre-detonation. The Powertrain Control Module (PCM) retards the spark timing based on the signals from the knock sensors. The knock sensors produce an AC voltage when specific frequencies are detected. The knock sensor voltages are an input to the PCM. The amount of AC voltage produced is proportional to the intensity of the knock.
When you ****** timing fuel mileage goes down.
Posted on Apr 08, 2009
The Knock sensor on a 22re is located under the intake manifold on the engine block. to the upper left of the oil filter. With is the passenger side of the engine. I believe it is yellow in color. Not do be confused with the oil pressure sensor which is close by. The knock sensor has a larger electrical connector. Good luck it can be hard to get to.
Posted on May 06, 2009
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