Hi I am working with a KALMAR lift truck model C50BX PS serial 565362A Starts fine but then accelerator goes at height throttle, sometimes it' goes down then high again, so I have replaced the throttle body, thinking that that was the problem , it' did work ok for about 15 minutes then the problem came back any ideas on what could be the problem. If you could guide me one working on it.
I appreciate the help in advance.