[TurboWS6]

Originally Posted by MonteC

fix the knock sensor.

^This.

A bad knock sensor will make the computer pull timing like crazy, all it has to do is tell the ECU you have knock and your timing goes away (if its bad its telling the ECU your knocking) along with that, your power. Chances are its got water or oil under the grommet in the valley pan, not saying you had the truck in water though, it accumulates over time due to the high humidity of the south and heat cycles. When you change it make sure you seal the rubber grommet with some silicone and seal the other one while your there to and this shouldn't happen again.