M923a2 Tranny slipping

[Kimcyr]

I just got my truck out went for a run of hard wood Maple l
Loaded it was slipping going up a hill just wondering if this ever happened to anybody and no signs of the torque acting up before
It seems to take a long time before it reaches RPMs when I get back home I'm going to change my fuel filters all my levels in the transmission are good

 

[rustystud]

Are you saying that it always takes a long time to get up to speed ? Engine revs up and the truck just sorts of slugs along ? If that is so then you could have broken your stator in the torque converter.

 

[Kimcyr]

OK well that could be it just started after I loaded it with the hardwood and then started, being sluggish after hope I didn't break that but it is a possibility I never really snapped it to give her a hard go well I'm going to have to troubleshoot a bit more thank you very much

 

[Swamp Donkey]

It seems to take a long time before it reaches RPMs

Are you sure it's the transmission slipping? If the transmission was slipping, it would stand to reason that RPMs would go up faster instead of slower. That one symptom there makes me think you have loss of power instead of slippage. Air in the fuel from a leaking fuel line can cause what you describe. Have you checked to see if you have a brake(s) not releasing? What did the transmission temp get up to when you were climbing these hills? Slippage causes heat. Did the transmission fluid smell burnt? How does the truck rev in neutral or running without a load?

Air in the fuel line, clogged fuel filter and hung brakes are far more common than transmission problems and could feel like slippage on a big truck with a load. Both of these are also easier to check and repair than a transmission.

If you're sure it's slipping, verify the fluid level again exactly by the book. Checking the level can easily produce false results when dealing with this much fluid, if not done properly. Too low and you can have slippage. Too high and you'll aerate the fluid, which can cause slippage, feel sluggish and create other problems.