Where is the knock sensor located on a 1991 rs camaro?
Under hood, passenger side, lower engine area, front of starter, mounted in engine block.
The knock sensor on Nissan 300ZX non-turbo from 1990 thru 1996 is located below the lower intake manifold on the rear of the engine block. To replace the knock sensor the upper and lower intake manifolds need to be removed. It is always best to replace the knock sensor with a new one considering its major dissasembly.
The function of the knock sensor ob a sensor on a 1991 4.3 s10 is to provide the computer the position of the crank shaft to give it the right information to get correct timing. That would be the crank position sensor. The knock sensor monitors the engine for spark knock (ping) so the ECM (Engine Control Module) can retard the timing to eliminate it.
The knock sensor is located in the block, under the intake manifold. You have to basically remove the top end of the engine to get to it. The pigtail which connects the sensor to the harness is usually the culprit. It is notorious for failing but after spending all the time and money for gaskets I would recommend replacing the sensor as well.