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Tumbleweed

'11 F650 Exhaust Brake Override?

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Hi,

 

I really like the exhaust brake feature on this '11 with Cummings/Allison, what I don't like at all about it is the transmission downshift that coincides with it.

 

Has anyone ever heard tell of negating the automatic downshift but keeping the exhaust retard aspect?

 

Thanks,

 

Tumbleweed

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Does it hit hard when it downshifts? One of my trucks is a 2012 Ram with the 6.7L Cummins but i have the Aisin trans in that. When i have the transmission set to tow/haul mode, The downshift hits pretty hard but in regular drive mode the exhaust brake and downshift is smooth. I"m wondering if that hard downshift is what your describing. I know they are different trucks and transmissions but just trying to get a better idea of what its doing  that you dont like.

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No, it's not an "issue" of any kind, it downshifts smoothly as should when exh brake is engaged (does not have tow/haul tranny option), it just shifts too soon for what I would rather it do: simply decelerate and/or hold back using only retard action without downshifting (I'm an old fart, thats what the damn gear shifter is for, lol).

 

I doubt it's something that can be done short of the trucks brain being programmed to 'not shift', may not be possible at all.

 

Thanks for the reply,

 

Tumbleweed

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