Quote:
Originally Posted by Kate1025
Assuming we have it as going down the Grapevine 6% grade for 5 miles (CA) had issues with engine torking way down as we descended. I understand it is supposed to help with braking but it may be a bigger issue when traveling at 45mph - engine went from 2800 rpm to 4000 rpm when it kicked in. Releasing the tow/haul switch at this point did NOTHING!
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One of the drawbacks of having such a long coach on a gasser. Using the Tow/Haul going down hills of such grades will make the RPMs scream. It takes a bit of practice of switching between the Tow/Hall and light use of the brakes. I just don't like the very high RPMs whether going up or down hills.
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