I have a 2005 ford F150. Recently had the transmission fluid drained, flushed, and replace by a garage. Shortly after I noticed that between 45-55 miles an hour when cruising in overdrive that if I press the gas a little more without making it shift out of overdrive that I feel jolts from the tranny. It feels like its trying to decide whether to downshift and the shifting mechism binds or something. I fear that if this continues that I will see increased jolts from the transmission that will ultimately lead to me losing overdrive completely. Any ideas? Could it be that the shift points might be thrown off if the garage that replaced the fluid didn't use fords recommended fluid? Give it to me straight!

Michael, If your vehicle is a normal automatic transmission it will have a torque converter. If you really want to attempt a complete flush, I will post links on how it is done, you will still have to change the filter to ensure a thorough job. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Automatic Transmission FlushDo it Yourself ProceduresNO SPECIAL TOOLS OR...
Automatic Transmission Filter and Flush on Jeep Cherokee
2001 Ford F150 Transmission Service Flush Torque Converter Oil Cooler Pan...

You don't yourself. The lube change shop or garage can do this (requires special tools or removal of the pan). for a 2005 you're likely in need of a flush. some models can have a dipstick installed, but its not necessary. Unless you have a serious leak of fluid or shifting issues, it's rare to lose fluid. If you are having issues, then start with a flush and inspection BY A REPUTABLE GARAGE. do not use a dealer or transmission shop, they will always find ways to seprate you from your $$$

i think your right here a computer fault ,water could have got into it

Flushing transmission fluid in any vehicle requires a machine that hooks into the systems via the transmission coolant lines and forces new fluid in and old fluid out.

You can change the fluid, without flushing the system, by removing the transmission pan.It is located on the bottom if the motor. Let all the fluid drain out, and replace the pan with a new gasket. You can then refill the fluid.

Good Luck!!

Did you flush the coolant with a kit? Did you back flow the coolant? And one more question. Did you flush it with water hose or something with more pressure?

no it does not but it is a good idea it gets all the old fluid out

No, not normal. Have trans serviced including draining the torque converter and changing the filter.Sounds like a sluggish valve body. New oil will clean it up

If it's manuel you just need the oil, there is a fill hole and a drain hole on the side of the transmission. If it's an automatic, there is an transmission filter that need to be changed if it's been there long enough. 
The cheaper way to change the transmission fluid is to have a transmission shop flush it out with a transmission flush system that connects to the high pressure side transmission line and it replaces the old oil with new one and check the transmission line pressure too. This re places 15 liters of fluid. The more expensive is if you just drop the transmission pan and change the oil and filter you only replace about 3 liters in total and if you don't mind the mess you can do it your self for around $50.00 for the filter, gasket and Transmission oil.
Good luck and keep me posted.
Keep me posted and good luck, be glad to help.

you must have just drained the pan? There is much more held in the converter. The one I am rebuilding this week is an 05 and doesn't have a drain plug on it (not many do anymore). A flush is the only way to change it all out. 13.9qts sounds like the total amount if the trans was completely empty, converter and all

Have you ever changed the transmission fluid flush and replaced the transmission filter?