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Topic: Allison Touchpad when Cold (Read 826 times) previous topic - next topic

Allison Touchpad when Cold

Does anyone else find their touchpad for Allison transmission stubborn to activate with touch when cold?

Can I replace just the touchpad? Or what is likely the cause of this problem.  In warmer temps it works just fine; however, when it's cold it might take 3 min and numerous attempts to get it in to gear.

TIA
1996 36' U295 Build #4879 Motorcade #18088
2007 Jeep Liberty 4x4 FMCA #F474816
Foretravel Mid-South
There's no happy like Foretravel happy!

Re: Allison Touchpad when Cold

Reply #1 –
Contact Transmission Instruments
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 Touchpad when Cold

Reply #2 –
Thanks Mr. Wolfe,

A common problem? Is it solid state switches or something else?

Best,
JWH
1996 36' U295 Build #4879 Motorcade #18088
2007 Jeep Liberty 4x4 FMCA #F474816
Foretravel Mid-South
There's no happy like Foretravel happy!

Re: Allison Touchpad when Cold

Reply #3 –
Yes, a "not infrequent" issue. 

Black box to me. 

I leave troubleshooting and repair up to John (link above).  That is all he does for a living, and has been doing it for a lot of years.  In the Ft Worth TX area if I recall correctly.
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 Touchpad when Cold

Reply #4 –

Did you look to see if any diagnostic codes are stored?  If not familiar with procedure, see link:

Allison Transmission Codes Manual

When we get into the cold weather months (like now) I keep a small electric heater sitting on the floor in front of the driver seat, and run it every night.  I have found that keeping the area in and around the driver instrument panel warm seems to keep everything "happy".  Also lowers the chance of condensation forming in any of the electronics when you warm up the coach rapidly - like if you started it up to travel when everything inside was chilled.  Not saying it's a cure-all, but I figure it doesn't do any harm.

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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 Touchpad when Cold

Reply #5 –
John told me the later control pads are sealed and the heating is not needed and ineffective.  Not sure where the transition is but somewhere between the 93 and our 97 I assume
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4