I have a 7FGCU32 that I was told is very similar to the 7FGCU25, this is a LPG model. The problem started as the truck would run but if it died we would have to pull the LPG line off the tank to release pressure then it would restart right away, but it still ran but the rpm's had to stay up using the throttle so it wouldn't die, if it died we had to relieve the pressure again. So I was told it was the regulator, so I removed and I rebuilt the regulator, which cured that problem, now it does start back up without having to disconnect the tank, but it idles rough and after a bit wont idle on its own.... if you keep it running with the throttle in neutral it seems to rev up and run great, but if you put it in forward or reverse it loses pawer and can not make it up even the smallest incline... it can move itself along on flat concrete but with little power. After getting the service manual, and understanding it a bit, I see that the OPS light is flashing 2 times then stays on then flashes again.. Turns out there is a sensor in the seat that is not hooked up, I see the wire going to it, but I believe the seat was replaced prior to us getting the lift and there is no sensor in the seat... now the manual says the problems I have are similar to those I would have if that sensor were bad or no one was sitting in the seat, due to the fact that it runs good when in neutral.... does anyone know how I can bypass this sensor? or if there are any other adjustments on the regulator or carb that I can try?