Thank you for the replies I got the codes from the cab monitor which were 4, 7, and 11. All of which indicated a wiring problem and that something was amiss with the back hydraulic pump’s sending unit. When I unplugged both sensors from the pumps bared and inspected the wiring harnesses I found several poor wiring splices that had started to fail as well as some that could have been shorting out if the machine shook the harness when on rough terrain. The many gremlins in the system played havoc with several of the low voltage sensors and controls the throttle system being one of them. Tore back all the poor wiring repairs and replaced with new wires and plugs. Back up and running. Too many systems and subsystems linked together making things difficult to pin point the origin of the actual problem. Sure miss the old hand throttle half dozen wire machines.