TheSebKSN11

I posted a thread previously called, "kick off the line." My 2011 super crew was/is kicking in the rear when I stepped on the gas. Sometimes a shudder, sometimes a kick. I brought it to the dealership this last weekend and had them look at it. The service rep, Jessica, (who was pretty hot), said there is a service bulletin that came out recently about the rear axle on some '11s being at the wrong angle; therefore, causing a shudder upon acceleration. She said it could be fixed with a few shims. If not, they will have to tear down the axle and find the issue. She also said it could be the springs. I am waiting for her to call when the parts come in. Has anyone ever heard of this?

texasbill

Yes I have heard of the symptoms but no one owning up saying that Ford screwed up the driveline angles. There is a TSB out for the 157WB trucks for a shudder during aceleration from a stop. There are several post on here about that. Also the clunk could also be the splines on the drive shaft need to be lubed....that is a issue that has been around a while as well.

justjimmy

Yes, this is a problem with lots of F150s - 145" and 157" wheel bases.

For additional information on possible causes and solutions specifically to the axle wrap and wheel hop, look here:

https://www.f150forum.com/f38/axel-w...ension-141106/

... but also, do a search. Like TexasBill said, there's LOTS of posts about this topic.

jwoods

Do you know the TSB number? I've got the same trouble on my 157" 2011.

TheSebKSN11

Looks like the parts came in today. I will let all of you know if the shims worked or if they had to do a tear down. And of course.....if it worked.

TheSebKSN11

the truck is on the lift right now getting the shims put on. man, this better work.

EBinMT

Pics or she doesn't exist. lol

murf

^ x2