Crankshaft sensor replacement please?

Picture of crank sensor

The topmost sensor should be the correct picture of it.

How to replace sensor, repair manual shows different picture of wiring.

44,400 island miles, straight 6. After my "mechanic" replaced the water pump, the truck began starting very hard--- you have to give it alot of gas, and then once it does start, it smokes (white) and the engine will either rev way up, or chug and stall. After about 30 seconds it seems to be fine and then it runs right. He says a third of the crank shaft position sensor does note have continuity. Would a bad crank shaft position sensor cause the hard start followed by irregular revving?

Thanks!
Paul

Hey Paul,
Very possible, yet the only definitive test for a crank sensor performance is with a lab scope! Does your tech have this capability? Let me know! Also he can contact me if he needs more info/help!

Chris[/quote:0d5f9c08ef]
I doubt it. He said that he ohm'd it out. Here on St. Thomas it is hard to find competent people. I think that I'm all done with him. It looks easy enough to replace. Any tips or tricks?
Paul

Thank you very much. I replaced the NSS last weekend and the CPS today. Starts and runs well. Again thank yhou for your help
-Paul