Need to repair my ford aerostar

Even a haynes may not have that... I'd suggest you invest in a shop CD (truck) on ebay, I think 93 may be the first year but that should suffice.

If the problem is definitely in the Column, you might be ahead to buy an entire column from a salvage yard... and that will tell you a lot of what you need to know... just having it in your hands.

The best way is to find a " U-Pull-it " recycler. That way you get to learn how to remove and not pay for damage. :)

For $25 you can get an alldatadiy account and that should have some specifics on removing the column. You can print the stuff out and keep it if you need to but it's only a one year subscription. I have one for each of my three cars, comes in very handy when the engine light starts blinking, etc. That and a salvage yard should do you right.