I have roughly 104k miles. I live in Kansas City so the weather is trying to get colder. Lows of 45 highs of 80 right now. Last week I was accelerating on to the highway and the truck seemed to have trouble shifting. I hit the accelerator and it did not shift. It would continue to increase in speed but very slowly and would even tend to kind of sputter a little. My engine light came on and has gone off and on several times since then. This has occurred several more times and is always when I hit the highway. Any thoughts? What additional information can I provide to help with diagnosis? Thanks in advance for your help.

 

Hello johnnyv20 and welcome to FTE and the Super Duty forum.

Can you tell us what engine you have in your 2010 SD?

 

It's having trouble shifting because there is something wrong with the engine. Fix the engine problem and the trans will be fine again.

 

It's the 6.4 v8

 

Start a thread in the 6.4L Power Stroke engine forum about your lack or power and sputtering. You'll also want to get the truck scanned to see what error codes are being issued.

6.4L Power Stroke Diesel - Ford Truck Enthusiasts Forums

 

Thanks redford. I just posted there. I will go check out the computer codes tomorrow.