[Blacdout96]

Honestly, before spending $170+ on new sensors and then labor, I'd go take a trip to the junk yard and pull off ones off some cars, and use them to test to see if that is infact the problem. It would allow you to learn how to properly pull things apart on our engines without the worry of damaging your car. The great thing about our engines is just about all the parts are compatible between 96-2003 for the 3800 II engine, which you'll find in Bonneville's, Grand Prix's, Le Sabre's, Regals, etc. and there are tons of them in the yards. The bad part is the Crank pulley needs to be taken off to get to the crank senso, which is okay if your a home since oyu could use an impact wrench, but in the junkyard it's different. So unless you pull or drop the engine down, and then have enough muscle to loosen the crank bolt WHILE preventing the crank from rotating ( a screw driver in a cylinder hole should do the trick), it's going to be a pain in the ass to do ( you will also need the crank pulley removal tool to get it off, but I'm sure you can just rent that at Advance Auto.) The Cam isnt as hard, I believe you might need to take the water pump pulley off to get to it, and that's just 4 bolts on the face fo the pulley.

Like I said, I would do that to save money, adn learn some stuff, but that's as long as you have time and patience to learn.