Question about 1999 Lexus ES 300
What is the location of the knock sensors on a 92 lexus es 300
Need to remove the upper and lower air intake manifold. There are two knock sensors for the front and rear pistons banks. If you plan to do this yourself it is about 1 to 2 hours. While you are at it, there is a short coolant bypass hose sitting in the same spot, replace it. Another problem with the knock sensor is the wire harness used to connect the two knock sensors into one connection sometimes wears out and contacts the metal on the engine causing false signals to the ECM, so replace this cable also.
Just did this last summer on my 99 ES300. Pretty easy.
Posted on Mar 16, 2009
I found the solution to my knock sensor problem on a club lexus forum. hard wired my new knock sensors by cutting into the original wiring and connecting those wires to them and grounding them to the battery. the new knock sensors are positioned on my bracket in front the plenum.
Posted on Apr 13, 2012
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