Problem- When moving at low speeds, less than 20 MPH, and the truck downshifts I can feel a physical jerk and hear a soft clunk.

Background- I've had my 2009 Ford for about three weeks. Bought it from a Ford dealer and it checked out great there.

Had a check engine light last week. Turned out to be a non-recall TBS issue, which only gets fixed if it comes up and the customer brings it in. Techs explained it was a reflash of the Transmission computer.

The techs said that I might experience some rough shifting for a week or so as the computer 'got used' to the transmission.

I'm just wondering if folks think this falls into what they say is normal or if I should be worried. A rough shift is one thing, feeling the whole front end move with the gear change is another.

Thanks in advance,
AC

 

Give it a week, like the tech said.

 

Could be the driveshaft needs to be lubed. They had to do this in my 2010 after a couple years.

 

double post, sorry!

 

Just saw this thread. My '09 has done this since day 1. I bought it with 4 mile on it and its always done it. I attributed it to the 6 speed trans. I'll have to ask my dealership about it.

 

https://www.f150online.com/forums/20...ng-issues.html