when to use "econo mode" on Allison 5 speed tranny?
Is it for city or country driving? nothing listed in the manual.
Forum Discussion
There is more to it than what is in that pdf. From Brett Wolf, head of the FMCA technical commitee
The Allison transmission WILL NOT allow you to lug the engine, it will downshift at the bottom of maximum torque regardless of your actions.This up-shift on downgrades can be disconcerting when you allow your speed to climb too high, for then the up-shift happens at approx. 2,600 RPM(diesel), leaving only your service brakes to slow your speed.
I have studied the Allison transmission TCM and its interaction with a diesel engine TCM for some time.I'm still an amateur though.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961
The Allison transmission WILL NOT allow you to lug the engine, it will downshift at the bottom of maximum torque regardless of your actions.This up-shift on downgrades can be disconcerting when you allow your speed to climb too high, for then the up-shift happens at approx. 2,600 RPM(diesel), leaving only your service brakes to slow your speed.
I have studied the Allison transmission TCM and its interaction with a diesel engine TCM for some time.I'm still an amateur though.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961
