Throttle adjustment?

[tomas_maly]

I was told when I bought my Ford B-800 from the used truck dealer that a school bus usually has a modified system so it can only go up to about 60mph (or the throttle is otherwise limited). Going up a hill, it is SLOW, probably about 20mph at some times. The engine is a Cummins 5.9L.

Is there something perhaps to adjust with the throttle levers? Or something with the injection system? The dealer said something about "plates" that potentially block something. I really don't know much else.

Of course going any faster (speed or acceleration) is maybe a dumb idea when the vehicle fully loaded is around 10-12 tons.

[bansil]

Plenty of info about fuel plates etc on the Cummins forums

I don't know where you live, last night coming home I was in 1st gear at 2300 rpms going up the 8%+ grade (6 miles) into Boone this is normal for mine

these are big and heavy with "small" engines

I wont turn mine "up" until I replace the tranny with something stronger (your engine likes 2200/2500 rpms in our applications)

[crazycal]

If you turn up the power, make sure you install a pyrometer.