I bought this 2010 F150XLT crew cab truck used from a dealer with 48700 miles. I felt a vibration in it. They checked alignment and replaced a tire. As I left the dealer it felt pretty good. Now at take off, it hesitates and get vibration. I always had Chevy, so I decided to go with Ford. I like the way Ford looked. I should have stayed with Chevy. I guess Ford can't stand up to their products. They need to take care of this. I will let everyone know that is in the market for a Ford truck about this.

Having the same problem as many others. I have had my vehicle in two times now since I bought the vehicle in mid August of 2014 with just a bit of 50 miles. CarMax is very good a getting me in, providing a free rental if needed but they tell me the same thing that the others have noted. All that can be done is re-greasing the yoke. It seems to work OK for a week or two and then begins to jerk or clunk as others have stated and worsens to the point I feel like it needs to be repaired. I hope it cannot deteriorate to the point of disabling the vehicle while traveling as I am a senior citizen and really do not like being stranded for several reasons. I am well prepared just in case however.

Seems like Ford would come up with a more permanent fix. Maybe if enough of us complain they will.

Thanks for providing a forum to express my concerns.

Well problem started a few montha sfter purchasing truck, bought this truck used from dealer, had truck painted yellow for business, nice clean unit plain jane but does the job intended, clunk strted comming from rear end when slowing down for a traffic light foot comes off the gas then the traffic light turns green start pressing back on gas that's when the "Clonk" occurs, it's as if seems that it's when the tranny shifts from gear to gear that this occurs, Brought it to the dealer test drove and found nothing, I am going back this week and I will go for the test drive with them this time.

So I was leaning heavy to the Toyota Tundra when my wife says "check out the F-150" so I did. I liked it, enough to trade in my 1996 Supercab F-250 4x4, 7.5L before we drove from Oregon to Virginia. The truck performed excellant, I averaged 8mpg in the passes and 15-16.5mpg cruising 50-60mph. This was towing a 2007 toyota corolla on a u-haul transport trailer. Now the truck, 2010 4x4, super crew, long wheel base, TOW PACKAGE! XLT. I have been noticing a slight "clunk" accelerating from stop lights. I finally was intrigued enough.

I am a mechanic and got home to trouble shoot, only after driving a like vehicle from ford. This truck did not do what my truck does. I put on my coveralls, engaged the parking brake and placed the vehicle in neutral with the engine OFF. I worked my way back from the transfer case, universal joints to the differential. I noticed that when I turn the drive shaft that it turns considerably. I used a small pry bar and moved the flange of the pinion shaft as far as possible in one direction without really forcing it. I placed a mark on the differential housing and one on the flange. Than I rotated back in the other direction, again following what I did with the pry bar and placed another mark on the diffential housing. With that said, altogether it difference was about a 1/4". I don't know what the spec is for back lash and I'm not pulling it apart for warranty purposes.

I bought this truck as others did, TOWING CAPACITY, tow mirrors, integrated brake controller, crew cab, I really love this rig! For the sake of argument lets just say that between the corolla and the u-haul auto transport trailer we have a weight of 7K, that still leaves 4,300 pounds. If I have to get the rearend replaced I will be saddend. I have owned fords for the last 12 years. I will keep everyone posted as it goes to the shop tomorrow.

Update from Dec 18, 2010: Alright, sorry for the delay, took it to the dealership and they said that the splined shaft that slides into the transmission was the problem, solution? Well the service manager said they filled it with teflon grease, no joke. I love the truck but I too am experincing the hard downshift from 2nd to 1st.

Also still feel the "clunk" occasionally

Update from Jan 5, 2011: Sorry for the delay in the response. Took it to the Ford dealership in Newport News, VA and the mechanic said that it was the slip yoke out of the transmission. Mechanic stated that he repacked the slip yoke with teflon grease , this seemed to cure it for a while though we still feel it sometimes. Also I can atest to the "hard downshift" it almost has a clunk to it. I love this truck and have no intention of selling it, hopefully some recalls will come out to mitigate.