NO POWER

[mike1188]

I just traded my 2006 Duramax for a new 2009 f250 6.4.Pulled my 7500 lb camper on flat land for the first time this week end.It will not tac above 2800 rpms.At 65 you can put the peddle to the floor and it want go.It want shift up with the cruise on.It will stay at 2800 rpms until I cut cruise off let drop to about 1800 rpms regain speed and then reset it.It will down shift on all small inclines or overpasses.The dealer had it fro 4 days reprogrammed pcm and could not fix it.Ford and the dealer both agree something is wrong with it.I gave up on the dealer today and took it from them.I am going to take it to another dealer Monday.Any ideas or suggestions?No mods 1400 miles on it.

[benjamin24]

I towed with mine the first weekend I had it and wasn't really impressed either. My TT weighs about the same as yours and was just trying to baby it. My next trip was to the smokey mountains with some hills and really layed on it there and back. That trip I was impressed, it handled the hills like nobodys business. Hell coming home in a hurry I was running around 80 and it seemed like the faster I went the less the engine worked. Maybe your tranny needs to go through a learning process like after a tuner is installed. I'm no expert and just speculating but the more I tow and run mine the better it's gotten.

[mike1188]

Originally Posted by benjamin24

I towed with mine the first weekend I had it and wasn't really impressed either. My TT weighs about the same as yours and was just trying to baby it. My next trip was to the smokey mountains with some hills and really layed on it there and back. That trip I was impressed, it handled the hills like nobodys business. Hell coming home in a hurry I was running around 80 and it seemed like the faster I went the less the engine worked. Maybe your tranny needs to go through a learning process like after a tuner is installed. I'm no expert and just speculating but the more I tow and run mine the better it's gotten.

When you are towing on the open road say around 65 or 70 and accelerate does it take off or just creep up in speed?

[benjamin24]

Usually just creeps up in speed due to the torque converter being locked. I wouldn't say it creeps but it doesn't downshift like my gasser used to do which is better for the tranny. I don't really know at what speed stock the converter locks but I think my truck pulls better at higher speeds. I'm not a speed demon or just like to go fast, but truly believe the performance is better.

What gears do you have? I'm running 3.73s and this could make a difference also.

[Greenhorn Diesel]

Originally Posted by benjamin24

Usually just creeps up in speed due to the torque converter being locked. I wouldn't say it creeps but it doesn't downshift like my gasser used to do which is better for the tranny. I don't really know at what speed stock the converter locks but I think my truck pulls better at higher speeds. I'm not a speed demon or just like to go fast, but truly believe the performance is better.

What gears do you have? I'm running 3.73s and this could make a difference also.

From the factory the most torque I think most of the torque is made between 2000 and 2200 rpm. So yes, it will seem to tow better the faster you go because at 70 I am guessing you are running about 2000rpm. My truck at 70 runs 2200rpms but I have 4.10 gears. On a side note, don't wait untill tax time to Spartanize. That is what I did, and kicked myself in the *** not doing it sooner On the 210 tune, you will absolutely love towing. It pulls like the truck is on steroids.

[elibenson]

Also, what gearing do you have on that F250? If it is a 250, it is either 3.73 or 3.55 . Those are some pretty high gears. You won't get into your torque range till you get up there in speed some more. I would suggest accelerating quicker to keep the tranny from shifting too soon. That will let you use 4th gear longer to accelerate to a higher speed. Then when it shifts to 6th (overdrive) you will be closer to 2000 rpms.