Hello everyone first time on the forum.
My dad asked me to take a look at his truck, a 2006 f150 5.4L 4x4. It makes a small clunk when applying the brakes (only at low speeds like 5 - 15 MPH) and when going over speed bumps (not every time, maybe half of the time), it has about 118k miles on it. I thought it was the sway bar bushings and/or links but the sway bar doesn't move even with a pry bar. The click or clunk also happens during acceleration. I haven't been able to find out what it is yet. Also the ball joints, control arms and tie rods are solid, no play at all. Any help would be very much appreciated,
thanks,
Paul

 

Does it occur when only in 2 wheel drive or also in 4 wheel drive?
Might be a good idea to check all the u-joints starting with the front axles and drive shaft. Then check the rear driveshaft u-joints and drive line.

 

I'll check if it does it in 4 wheel drive and I'll let you know. The driveshaft makes a small clunk when you put it in to gear, so maybe that's part of the problem.

Thanks,
Paul