I have a 2002 Tradewinds RV coach with an Allison transmission. It has a mode button with an economy light that comes on. When should I be using this and whats the benefit. Also, should I be driving with engine brakes enabled at all times in highway and city driving or only when descending hills.
Make (other): National RV
I have tried the mode in different settings with engine brakes on and there seems to be little difference in the effect. Is there a savings in fuel in the economy setting
The MODE button may allow the driver to enable a secondary shift schedule or other special function that has been previously programed into the electronic control unit at the request of the OEM. For example, the OEM for a motorhome may have provided a secondary shift schedule for improved fuel economy. The name of the special function (ECONOMY) should appear on the MODE ID label adjacent to the MODE button. Pressing the MODEbutton activates the ECONOMY shift schedule and illuminates the MODE INDICATOR (LED). Other special functions which may be activated by theMODE button are D1 selection or PTO enable. The MODE button is also used to view diagnostic code information.
With all that said it would be better to use the economy mode on highways or flat ground, pretty much it limits the RPMS on the engine for better fuel mileage, on hills I would not use it.
The engine brake I would use highways, hills.... Around town it will not have to much affect....
Hope this helps some, IF you have more questions or concerns please feel free to contact me... Robert
10 Years RV experience... Cummins North West, Country Coach, Monaco Coach, Vendor certs.