I have a 01 with no mods the truck seems to come on very strong then lose power.I am wondering if the ecu is dialing back power too keep the auto trans from dying.Is this posssible?It should be known that This is my first diesel so I have nothing to compare it to.Also it was in for warrenty work yesterday for the lift pump so I am rueling that out.One more thing,it seems to have a hesitation from a stop at wot Im going to cheak the tps sensor today,any other ideas?

Thanks in advance,Dan