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Transmission Won't Downshift When In Cruise Control

allison transmission

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4 replies to this topic

#1 djrdgway

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Posted 11 May 2014 - 09:31 PM

My 2014 diesel pusher Allison transmission does not downshift when on cruise control.


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#2 lmsooter

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Posted 11 May 2014 - 10:27 PM

I am assuming you are talking about downshifting on a hill? Or trying to manually downshift when cruise is engaged?
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#3 djrdgway

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Posted 12 May 2014 - 07:49 AM

speed slows on incline. example at 60
mph will slow to 50 mph. will not downshift. will not increase RPM I have to cancel
cruise
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#4 hermanmullins

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Posted 12 May 2014 - 04:14 PM

djrdgway,

When you are on cruise do you have the transmission in MODE? If so your transmission wont down shift as fast as it will out of MODE. When I am on cruise and in MODE and come to an incline, I will step down on the accelerator so the Boost will kick in. This way my torque is kept up and I can make the climb with ease.

 

Herman   


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#5 BillAdams

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Posted 13 May 2014 - 09:35 AM

Can you manually push a lower number and have the transmission downshift or is it not working at all?


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