WHere is the crank shaft sensor located on a 1992 Buick Park Ave

It's located under the harmonic balance wheel on your model.

To look at a guide <a href="http://autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/15/dd/10/0900823d8015dd10.jsp" target="_blank">
Try HERE</a>
The wheel is on the passenger side of the engine and accessed behind the passenger front wheel, removing the wheel.


Hope this helps..