Allison 5sp: 4-5 WOT hang up

[skintback]

I noticed that my truck has now developed a 4-5 wot hang up all other shifts are fine. I have not changed anything in my tuning it started yesterday when i passed someone

The spin on and fuel filter have less than 200 miles on them :baby:

 

[slowlmm]

change your spin on

 

[Mike L.]

Need more info. Create a sinature so we know what you have.

 

[TrentNell]

if your using efi log it i have never had a shift hang unless i was short fuel from what the tcm was expecting .

 

[skintback]

I'm running a SC III pump shim and 1057 BPMod's going on 2+ years with no trouble at all and now this it only does it on WOT 4-5th shift Bone stock TCM tune and it does it with the race TCM tune as well the spin on is new and fuel filter is good I'll get some logs up

 

[beach_33]

just because you just changed the fuel filter doesnt mean it is good. if you have a bad tank of fuel it could have clogged the new filtervery quickly