I have this truck, The local Linde dealer gave up on it. When I start the engine, the engine will hunt then idle, don't know if this is related. After running the truck for a while, The truck works fine, hydraulics work fine. The customer the truck will start to do "half idle" and the hydraulics slowed down. I did a couple of things, I ran it, stalled out the motors and got code T238. Restarted and was fine. I pulled the truck in, and when I pulled up on the hand brake, it coded the same code and I had a lower high idle and the hydraulics slowed, I assume this is because of the lower high idle. Also what does the red light with the thunderbolt, last light over to the right of the cab acessory switches. Really hope for any knid of info, at least on that code.