can someone help?

Where is the location of the crankshaft timing sensor on a 1991 Pontiac Le Mans?

Answer
inside ditributer

Were do the timing marks go on a 1991 Pontiac lemans 16 liter front wheel drive?

Answer

Look on the timing belt cover you will see a notch on the top, this is where you line the camshaft pully mark. Now, on the crank pully you will find another notch on the pully it's self. Now at the 1 o'clock posistion on the timing cover above the crank pully you will find a little plastic "tit" about 1/2" long, line the crank pully with this and install the belt.

Note: on my car this bottom notice was actualy right on one of arms mounting the starter. its still in the 1 oclock posistion but wasnt on the plastic cover.