Ok before I get into what actually happened, this has happened three or four times over the last 6 months, the first three times the check engine light came on. The last time this heppened it was raining and I was sitting in stop and go traffic. I was barely moving about 10 miles per hour just an idle and all of a sudden it was like I mashed the go pedal to the floor for about three seconds. I naturally hit the brakes and just as I started to throw the truck in neutral the RPMs dropped back down to where they were and it did'nt do it again. I did'nt get the check engine light either but I have before when it done the same thing. Before when this has happened I was on an open road in alot less traffic and I was probably traveling between 50 and 65. The RPMs only ramp up for about 3 or 4 seconds and then they fall back off. Has anyone else had this happen to them?

 

It's your Predetor module messing with the computer. Remove the Predetor it's killing it softly