nedly05
Senior Member
My granite has the AMI-370 mack motor, intermittently the high stage goes out, and then the low stage only works with the switch in the high position, and low does nothing. It usually works fine for the first 25 miles or so then it starts to act up, always as I start over a big hill here in town. I will down shift on high, without trouble and as I start down the hill, the high stage quits and only low functions normally, but with the switch in the high position, almost as though a loose wire wiggles with the grade of the hill or something. Hopefully this isnt too confusing!!! Thanks!