It is located above oil filter, If your lucky you will be able to pull straight out after (after removing 1 small bolt)dropping starter down, however their usually rusted and strongly magnetized and will break then your if for a world of fun.
how to remove crankshaft position sensor from 91 Buick Regal
The crankshaft position sensor on a Buick is located behind th Harmic balancer. It should have a wire plugged in to it.
It has both.
The crankshaft position sensor, on your 1992 Buick regal 3.1 liter, is located on the back of the engine. The crankshaft position sensor is on the inside of the engine cover.
I took it to a shop. It was the crankshaft position sensor.
The crankshaft position sensor is mounted on the front of the engine. It bolts on, and has one wiring plug.
The Crankshaft Position Sensor is behind the crankshaft pulley (harmonic balancer). You will need a ½-inch drive breaker bar and appropriate socket.
The 2000 Buick Regal 3.8L Crankshaft Position Sensor is located behind the harmonic balancer pulley.
the crankshaft position sensor is located right behind the harmonic balancer mounted on the timing cover
The sensor is on the front cover near the water pump area.
The P0336 fault code on 1997 Buick Lesabre is a fault in the crankshaft position sensor circuit.
behind the power steering pump on the passenger side of the engine