And when it DOES fix your problem, then what? Maybe you buy each of us a case of beer?
If you have such doubt about the advice you get here, maybe you should have taken it to the shop where they could spend 3 days scratching their heads, performing the EXACT same work (plus a DIS and/or coil pack thrown in for good measure because a code hinted at it) and then smacking you with a $1000 repair bill. Fact is, here you get the best guesses that there are from people who have had the same problems. Guarantees.. no.. If you want professional advice, like I said, open your wallet and talk to Ford.
Nobody here ever said the crank sensor is an easy job; if you go over to the TBSCEC site, you can find an article by XR7dave which explains some good shortcuts.
BTW... you need a 7/32" open-end wrench or 6.5mm to get the bolts off.. Those are not very common. Sears sells tuneup wrenches which will work.
And also, you get ZERO sympathy from me about how hard it is.. I did mine at night, in the rain, in 40 degree weather, so spare me.