Re: Transmission Thumping when put into Drive and Reve
Assume you have the remarkable E4OD. I'm not one to give expert advice like you requested, but I've lived with this same problem off and on since mine was a year old, been thru 3 transmissions under Ford warranty for various issues including this one, and mine STILL has this problem at 83k miles. I call it clunking when I do a slow down while moving, but its a kick azz BANG from park to reverse frequently enough to remind me the problem is still there. Greasing the slip yoke quietens it for a time, but I have yet to find the solution...I've even talked to Ford regional engineers and they know its an issue but guess what? They dont make Broncos anymore and there arent any still under factory warranty, so you can guess their point of view. Check the u-joints as others suggested as a precaution, but this might be something you will learn to live with.