It is only every now and then, you can be driving around fine and then you leave a stop light and have zero power, you can floor the truck and can't get over 30mph, then all the sudden it will act normal! Often times when this happens, the volt gauge will max out and the engine will die! I had it checked by mechanics they say no problems on computer and that only real problem was oil pressure being about 10psi on idle. Charging system checks perfect at every parts store and electrical shop in the country! I don't know what to do?? My 1st thought is a Throttle position sensor. But i was wondering if this has happened to any of u. THank yoU! Please help!