rpm

I have a 1994 international 9400 with a Cummins N14 with Spicer 9 speed. While driving up a small not to steep hill I seemed to lose power. Once I was on flat ground I saw that the accelerator did not respond or raise the engine past 17 RPM even when in neutral. The only way to gain speed slowly...

Have a 2003 volvo with isx and 10 speed eaton. It has a growl that you can hear and even feel above 1500 rpm. There is no noise below that even at idle so I don't think it is the damper in the clutch. Noise is the same in every gear.