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Old 06-08-2022, 03:46 PM   #1
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Allison 3000 programming

I have read several threads about getting your Allison 3000 programmed.

I have a 2005 Newmar Mountain Aire 4032 with a 400hp Cummins ISL and an Allison 3000.

It shifts better and holds on inclines better in eco mode than in normal mode - significantly better.

This seems to me to indicate that my coach would benefit from having the transmission reprogrammed.

My question is - where does one go to get this done for an RV?
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Old 06-08-2022, 03:55 PM   #2
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Any Allison dealer can reprogram the Allison ECU.


And, yes, in economy mode the transmission will stay in a higher gear longer than if in power mode. I use economy mode 90% of the time, then down arrow if I need a lower gear.



But, please tell us exactly what you want changed.
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Old 06-08-2022, 04:59 PM   #3
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Originally Posted by wolfe10 View Post
Any Allison dealer can reprogram the Allison ECU.


And, yes, in economy mode the transmission will stay in a higher gear longer than if in power mode. I use economy mode 90% of the time, then down arrow if I need a lower gear.



But, please tell us exactly what you want changed.
It just really shifts like crap in regular mode. It is like it has lost its programming.
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Old 06-08-2022, 07:14 PM   #4
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My Allison 3000 series shifted very hard and harshly till I drained and refilled with transynd fluid

It truly made a night and day difference for me.
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Old 06-08-2022, 07:29 PM   #5
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I agree, I had my Allison filters and fluid changed a few years ago and it made a big difference in performance. My Allison came with Dextron III so that's what I used. Even the normal temperature dropped by approx. 10-15°.
Yes, Eco mode is what a MH should be using, it's considered light-duty for an Allison compared to a garbage truck.
Brett Wolfe is the man, if you want to read some of his material, PM me and I'll send the address..
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Old 06-08-2022, 07:38 PM   #6
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My Allison 3000 series shifted very hard and harshly till I drained and refilled with transynd fluid

It truly made a night and day difference for me.
Did that a couple months ago. Had it drained, flushed, new filters, and 668 Transynd.

It runs a little cooler, but still behaves poorly in regular/performance mode.
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Old 06-08-2022, 07:42 PM   #7
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Originally Posted by Ray,IN View Post
I agree, I had my Allison filters and fluid changed a few years ago and it made a big difference in performance. My Allison came with Dextron III so that's what I used. Even the normal temperature dropped by approx. 10-15°.
Yes, Eco mode is what a MH should be using, it's considered light-duty for an Allison compared to a garbage truck.
Brett Wolfe is the man, if you want to read some of his material, PM me and I'll send the address..
PM sent.

Thanks
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Old 06-20-2022, 06:36 AM   #8
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I had mine programmed to kick fan on sooner in florida weather. 2005 dynaquest.
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Old 06-21-2022, 06:28 AM   #9
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Originally Posted by Ray,IN View Post
I agree,
Brett Wolfe is the man, if you want to read some of his material, PM me and I'll send the address..
PM sent

Thanks
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