Trans won't upshift at WOT

[Andymax euniceg@clear.net]

Originally Posted by MMLMM

Just a note as I am seeing this often....

Problem:
trans holds gear and will not shift into next gear at wide open throttle unless you lift a little bit.


Whats happening is truck is not making the tq. where it needs to make the shift. The problem is it is not getting enough fuel to do so.


Fix:
Most often the fix is a new fuel filter as the filter is clogged and not letting enough fuel to engine.
Could also be due to a big tune and not having a lift pump, again not getting enough fuel.

so ur tranny wont shift is that what its doing

[MMLMM]

Originally Posted by Andymax [email

euniceg@clear.net[/email];371105]so ur tranny wont shift is that what its doing

No my trans is fine.
I posted this to let others know what a main issue is with WOT upshift issues.

[Stratman]

Originally Posted by 7setsLB7nJktrz

I got an 03 and I have number 1 and seven injectors out with number seven leaking oil into the chamber probably coming in by the valve stems. I noticed that if I hold WOT with the two bad injectors, I get a see saw of RPMs around 3000 and 3200 and the computer will not let the unit change to the next higher gear. Just like some of the previous posters mentioned, if I let up on the accelerator, I would get the unit to shift up.
Mind ya this only would happen on flat land. I can imagine in Ohio or Colorado and Arizona, where there are constant challenges of pulling hills and mountains, this just would not be tolerable at all. I have pulled my number 1 glow plug and have found fuel spraying out of the hole and the same with number 7. All the rest don't spray fuel with the ignition relay pulled out, which allows the engine to turn over and pressurized the fuel rails without firing the injectors. You tech pros, please correct me if I am wrong here. By having the glow plugs out, if I have a leaking injector, the fuel would spray out of the hole, right into my eyes as I look into the hole. Good injectors don't spray fuel out of the hole with no ignition relay in, or the injector not firing while cranking the engine.

Hey!

Have you heard of the Ice pick Fix. I read this on another site you might want to take a look at that before you go do something else! 1 and 7 are common to need this fix. you also might want to check for Harness rub also while you are there