truckdriverguy

So, I have a 2011 Lariat Super Crew Cab, 5.0 (118,000 miles), and am having an issue. About 90% of the time, when I accelerate from a stop, I get a jerk. I am assuming that it is the transmission, but I do not know much about vehicles, so it could be anything... I have done some reading up on it, but I am not able to find an absolute fix for it (if what I am reading is even the same issue that I am having). Does anybody have any idea what the issue could be? Thanks in advance.

For what it is worth, I just purchased this truck and did not notice it during the test drive. Everything checks out good on the paperwork from where the dealership does its tests, as well as everything checking out good in the Vehicle Health Report (SYNC).

raski

Do not overlook motor mounts.

techrep

iTrader: (1)

Do you have a 3:73 limited slip rear end ?

truckdriverguy

I have absolutely no idea... How would I find that out? Also, how/why would that be my issue?

I have read online that it could possibly be a bad spark plug. That doesn't even sound right to me, but, again, I do not know much about vehicles...

techrep

iTrader: (1)

Clutch packs could be slipping..

truckdriverguy

I went in to the dealership and they said the slip yolk probably needs to be greased. Hopefully that will fix it. Honestly, because of this, I am starting to regret my purchase... Hopefully this will be the fix and I can start enjoying my truck...

PerryB

It's almost certainly the slip yoke (yolk is part of an egg). It's generally referred to as "slip-bump" and is a fairly common problem with a LOT of trucks and SUV's. Greasing the splines in the yoke will fix it for a while, anywhere from a couple weeks to a couple months. The final fix is a new slip yoke. The nickel plating is wearing off and the contact surfaces aren't as slick as they used to be.

truckdriverguy

I was told that it is not covered under warranty because it is considered "maintenance". I am hoping that, by now, Ford has a permanent solution to this issue. From what I am reading online, there is no permanent solution... Very disappointing...

techrep

iTrader: (1)

Just grease it every 5K miles during oil change..

truckdriverguy

Is a new driveshaft a permanent solution? I don't know that I can deal with this clunk, and even having to get it serviced on a regular basis...