ok i have a 1998.5 cummins with the 5 speed and when i set my edge on the higher settings my truck gets real high rpms and i thought it was my clutch slipping but yesterday i got my codes read and the tps code came on so i cleaned the tps conector and it fixed the problem for a little bit and now when i get on the gas rpms get high and i dont go any faster oh and when im on the stock setting it doesnt seem to do it what do you all think it is my clutch or tps