Re: 2000 ranger bump
Common problem. Pull the rear driveshaft, clean the slip yoke out with some brake cleaner, grease it up, and put it back in. If that doesn't work then get the whole new aluminum driveshaft from Ford. Yours is off warranty now so you'll have to pay. I've had two 4x4 Rangers, a 99 and now an 02 and the dealer replaced the driveshaft on both on warranty. Ford has a TSB on it. Also they found the original yoke on my '99 was too long and would bind up, causing a loud clang in reverse.
'05 Sport Trac 4x4, L/S, torsion lift, extended shackles, 265's
'03 Taurus wagon, Silverstars, Yoko TRZ's
If you give a man a fish, he'll eat for a day. If you teach a man to fish, he'll sit in a boat and drink beer all day.