guys i need some help!!! i had the local allison dealer build my ATS stage 2 trans and installed it an it does not engage into any gear, acts like it isnt gettin any pressure from the pump. any help would be great the guy at the dealer keeps telling me its the nsbu but i have adjusted it everyway possible. i called mike L and he gave me some advice i tried that an still no go and didnt wanna bother him this close to the holiday. thanks guys

what color is your nsbu switch, is it the brown one? very possible switch could be out, does it set any codes? do you have a way to get codes out of it?

brand new nsbu switch, it black with a cream colored piece at the shift lever. no codes out of it. have 2 code readers and a tech 2 and nuthin from them

Did it move at all after they installed it or did it just start ?

just start is all it sucked up some of the oil but still shows over full with less oil than it should take to fill it. going to check line pressure today if i can find a gauge.

Weird. Seems like there should be some codes

yea thats what i figured, cant find a gauge that has a high enough rating to use so guess its going to have to wait till next week. :(

yea thats what i figured, cant find a gauge that has a high enough rating to use so guess its going to have to wait till next week. :(

You will need a special adapter for the gauge. This is starting to sound like crossed bell housing gaskets or loose stator support bolts on the pump.

when putting it in drive, does it seem to maybe wanna creep forward just a little? There might be a spool getting stuck just straight dumping the fluid. Had this happen to one of my builds.

nope doesnt try to do anything when put in gear, wont even try to in 4 lo im gonna take it back out tomorrow after dinner an get it fixed

shitty man! hope you get this worked out soon. after your last fiasco!

i will be sending you some money within the week. sold the front