Not a clue but should be screwed into the intake manifold somewhere. Mine is a brass hex-shaped item about 1 inch across with two wires attached. Different engine of course.

If you are going to do a lot of troubleshooting and repair on your car, I can recommend a subscription to "alldatadiy.com". It is inexpensive and you will find a wealth of information. You may also like a repair manual on CD available from many sources. I got mine from an ebay source.

Good luck!