when cold it wont move?

[melmount]

I always warm the truck before driving. But what causes it when first started to have no reaction to the accelerator? Well, maybe very little.I can get it to move but real slowly. any ideas?

[jesilvas]

Exhaust back pressure valve is still closed cause it's cold.

[ridiculously_necessary]

mine does the same thing. but only when first pressign the loud pedal. its the obpv, i just deal with it. you can unplug it.

[melmount]

mine is unplugged, the sensor is too. Thats not it. Its not stuck open cause it runs fine after say 5 minutes?
any othert thoughts?

[ridiculously_necessary]

thick oil? where you live? how cold is it?

[melmount]

Probably 30 this morning. I have 5w40 syn in it. I always warm it up, but I have 50 mph wind guests this morning. I wanted to move it immediatly from a tree that looked like a limb was coming down. I had 3/4 throttle and i could of pushed it faster.

[melmount]

Any ideas other then ebpv?

[F250 Fever]

thick oil the trucks needs warm the oil up depending on how cold it is

[Zaairman]

Does it rev up at all or RPMs stay the same?

[melmount]

Its not the trans slipping if thats why you were asking that.
I dont think it is.
I can get it to rev but its hard to and slow to rev. I am almost thinking the apps??