My Allison sounds like a Hydrostat Tractor?

HI TEK AG · 01-31-2007, 06:23 AM

Recently my ATS Stage IV Allison has started whining profusely. The thing sounds just like a hydrostatic drive tractor. Anyone heard of this before??? Also seems like torque converter is staying locked as it bogs down and wants to shutter when holding the brake in gear(no throttle).

Im running a modified big Quad EFI Live tune and a Hot Edge Stack.

I pulled the thing all summer with great sucess and no problems but then this winter when i havent even been runnin her hard, this happened????

While it is still driving I am wondering if i should stop driving it immediately

**ob_1jr** · 01-31-2007, 06:15 PM

Out of curiosity, when was the last time you changed your fuel filter? Have you thought of taking it back to the place that installed the tranny upgrade kit? You might want to PM MikeL to see if he has any ideas since he is the Allison guru.

HI TEK AG · 01-31-2007, 07:02 PM

Changed the fuel filter two nights ago... ?? Yeah I have been talking with the guy that installed it and he is researching it as well because he had never heard of it either. Just trying to get some other opinions

THanks

JakeGMCHD · 02-02-2007, 05:51 PM

When's the last time you changed the spin-on Ally filter?? How's the fluid level? How does the oil look and smell?

HI TEK AG · 02-04-2007, 07:16 PM

Spin on was about 3500 mi ago or so and fluid levels, color, and smell are all fine.

Thanks for the reply

HI TEK AG · 02-25-2007, 06:05 AM

Update for ya... The whining was caused by the front pump in the tranny a very uncommon problem to have, however the even more unheard of reason for the pump to go out was a broken bell housing. ATS had never even heard of it before... I guess it was just my dumb luck. I'll keep tellin people it was too much power though.... HAHA $300 for the bell housing and $128 for the pump took care of her though

**TurboBeagleBuggy** · 02-25-2007, 06:09 AM

Glad to hear that everything is fixed and back to normal for you.