Easy Mountain Driving
When I lived full-time in Florida, I rarely thought about mountain driving. For the one trip out west or through the Smoky Mountains, it was trivial to simply take off the cruise control and turn on ...
Forum Discussion
DSDP Don wrote:You shouldn't have to move the switch from LOW to HIGH. The Cummins ISL should do this automatically for you if you set the "Cruise Control Speed Delta for Minimum Engine Brake - Parameter" and the "Cruise Control Speed Delta for Maximum Engine Brake - Parameter"
If the speed continues to rise, I'll move the engine brake from LOW to HIGH. If it still picks up speed, the trans will down shift and the unit will start even heavier braking.
Please see: https://cumminsengines.com/powerspec-isl-engine-brake-features-and-parameters
The way it works is the engine will apply the minimum engine brake at first but if the vehicle starts moving too fast (above the set speed) it will apply the maximum. Have you tried leaving it on HIGH and seeing if it only applies the minimum on slight speed increases?
