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The 1991 Pontiac Grand Prix oxygen sensor is located on the outside of the air filter housing. You will find the sensor on the back side of the air filter housing.
Location of knock sensor 1991 GM sierra 350 2500?
There is no "knock sensor" on a 4.0L engine
The knock sensor is located on the left side of the block. Often the steering shaft will contact and wrap the wiring harness around it, braking the connector. You should check this first, before replacing the sensor.
on the right side of the block just above the trany The sensor is located just above the manfol.
on the engine block below the exhaust manifold. you can see it best by looking through the front passenger wheel well
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 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.
It is located right above the starter for a 5.7l V8, not sure for the 4.3 or 5.0, probably the same place
Where is the rear washer fluid reservoir located on a 1991 Pontiac Transport
Under hood, passenger side, lower engine area, front of starter, mounted in engine block.
Should be located at the rear of the radiator approx. 1/3 from the top unscrew to replace