Full time 4x4 front knuckles and Crankshaft Sensor

Ok I know 4x4 makes steering a little difficult but when I have to turn sharp I of course slow WAAAAAAY down, but when I turn it sounds awful! Are there grease serts on the front knuckles or could the joints be bad?

Also Where is the Crankshaft sensor located, and how do i test functionality?

The first thing I'd do is check the front end oil. If you replace it use synthetic oil.

As in the front differential oil?
Replace with Lucas maybe?

Your front wheels shouldn't bind when making sharp turns. Your Quadra-Trac transfer case should only lock into 4wd when your rear wheels start to slip/spin and when they do have traction the case should be in 2WD mode and take sharp turns as well as a RWD car. This is common vicious coupler failure of the Quadra-Trac case. In the long run it eats up your front tires and universal joints, not to mention the poor gas mileage.

Ok I know 4x4 makes steering a little difficult but when I have to turn sharp I of course slow WAAAAAAY down, but when I turn it sounds awful! Are there grease serts on the front knuckles or could the joints be bad?

Also Where is the Crankshaft sensor located, and how do i test functionality?

Is this a thing that is happening in te transfer case?
Would this explain my difficulty shifting to low-range?
When I try to shift to low range I put it in neutral, shift quickly from full time 4 high straight back to 4 low. I wait then when I shift into gear (either Drive or 1st) It will sometimes catch then when I give it throttle it will pop the 4x4 selector forward slightly and grind horribly, without moving. ????