i have an 02 f350...5.4 auto. when the truck shifts into overdrive, it feels like you are driving over rumble strips on the side of the road, but only when it is shifting "hard". is this something common and is there a fix? thanks alot for the help

 

Can be Torque converter or epc (electronic pressure control ) within tranny.
Has fluid been changed?
How many miles?
Take it to a tranny shop that you trust.
Rich

 

has 60k on it now...i have not changed fluid. i made an appt at the trans shop, i just wanted to get an idea of the problem before i take it ther...thanks for the help

 

Have you considered installing a Sonnax and springs kit?

Sounds like your converter clutches are slipping. I wouldn't let them do that. Back out of your "loud pedal" until you get this straightened out.

Pop

 

hey i got an 05 with the 5.4 and my tranny does has the same shudder your describing but when start from a dead stop its in the tranny shop now getting a rebuild. i swear ever since i did that trans flush freakin thing has been giving me problems

 

Same here with my '02 5.4. I only use the OD when I am on the highway, and can easily cruise at 70 mph. My truck has 46K on it. I think its pretty common.