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Topic: Allison Trans (Read 675 times) previous topic - next topic

Allison Trans

All of a sudden the key pad fluid check no longer works (trans in N engine idling,parking brake set operating Temp, press up and down arrows at the same time). Trans works correctly, any ideas?
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Allison Trans

Reply #1 –
Bruce,

So, what does the shift pad display do when you push the up and down arrows at the same time?  Does it go directly to diagnostic codes?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Allison Trans

Reply #2 –
Brett, it doesn't do anything shows N. How having just thought about it I don't have a parking brake light on on the dash when the brake is set. Could the trans not know the brake is set (bad press sw on the park valve)?
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Allison Trans

Reply #3 –
Bruce,

The Allison shift pad should read even with engine off, as long as ignition is on (shift pad illuminated).

One of the things I check when doing an inspection.  Since I do the engine AFTER the interior, I check the transmission for codes without starting the engine.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Allison Trans

Reply #4 –
It will go into diagnostic mode with key on engine off. I don't have the book right in front of me to see what its doing as far as self check.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Allison Trans

Reply #5 –
I could be wrong but are you pressing the up and down arrows at the same time?? That should bring either the oil level countdown or if it does not have this option then the diagnostic  d1 starts.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Allison Trans

Reply #6 –
John, it used to do the oil check, now it does nothing.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Allison Trans

Reply #7 –
For oil level to work on the push bottons, I THINK the trans has to be up to temperature. I recall mine being angry and not giving a reading when cold.
1998 U270 34'

Re: Allison Trans

Reply #8 –
Quote from: krush –
For oil level to work on the push bottons, I THINK the trans has to be up to temperature. I recall mine being angry and not giving a reading when cold.

Correct.  But, the shift pad will still display O L and then the code for transmission temperature too cold (7 0 on many). If Bruce is not getting the O L suspect that is a different issue.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Allison Trans

Reply #9 –
Quote from: bbeane –
How having just thought about it I don't have a parking brake light on on the dash when the brake is set. Could the trans not know the brake is set (bad press sw on the park valve)?
Bruce,

I think you are on the right track here, and there is some connection between the two different problems.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Allison Trans

Reply #10 –
I'm in Pacific time zone ( little early in the CG)  in a Nv I'll check it out later today and pose what I find,
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Allison Trans

Reply #11 –
Ok just checked it out. Manual fluid check on the money cold, KOEO press arrows OL-70 no other codes, KOER it reads OL-70 as it should (fluid temp too cold). No other codes, I guess I'll see what happens when it warms up.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country