[AT] rent a scan tool was Cummins scan tool

[James Peck]

These people rent programming setups. Maybe they can help you.

https://blog.diesellaptops.com/2018/07/02/remote-programming-kits/

[Cecil Bearden] I have a 98 Chevy C8500 w/ 3126B Cat and Allison HT750.  It has a speed control when using the PTO that has been disconnected.  It was a former Mechanic service truck.  In order to get the high idle switch connected I have to take the truck to a Cat dealer and they hook up the computer to the truck and reprogram the computer to work with the high idle switch.  This is a minimum of $500.. When the computer is connected to the truck and then connects to Cat there is a $250 charge to connect to the Cat service site that $250 goes to Cat.  The other charges are to the stealership.   As much as I love Cat equipment, this is a ridiculous charge.  I use a piece of 1x2 cut to the right length and wedge it form the accelerator to the seat.

[ James]  That vocational truck was a Navistar with a Cummins engine. We had been told that we could use the cruise control setting to regulate PTO speed when stationary. The engine load was going to a shiftable transfer box that had pumps bolted to it. The Navistar dealer brought over a Cummins rep with a laptop type diagnostic tool.  We ended up adding a potentiometer that provided a voltage speed command to the engine in place of the fly by wire type accelerator pedal when the truck was stationary.

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