Where is the crank shaft sensor located on a 1997 Buick Riviera?
it is to the right side of the crank shaft pulley it will have a
connector to it held on by two bolts. you have to pull the crank
pulley first. use a three hole puller, called a chicken foot,
because it looks like a chicken foot. there will be little holes in
the face of the pulley. the bolts needed will be 6mm about 4in
long. the pulley will come off, remove the plastic piece covering
the sensor and replace. do not pry on the pulley, it is easy to
bend the teeth behind it, and it must be able to pass through the
ridges on the new sensor. make sure it is the crank sensor you need
to change before doing all this and not the cam shaft sensor, just
above the crank sensor, they will both give the same problem. No
spark. good luck.