So i've got this 2002 F150. Replaced the COPs last winter. New plugs and wires. Changed the injectors, fuel pump, and hollowed out the catylytic converters. Today i drove 20 miles down the highway. I stopped at the local store and put it in park. When i put it in park...it rose from 1000-2700rpm. Put it in neutral, and the rpms never came down. Put it in drive and got one hell of a jerk! Shut it off and restarted. It ran fine until i headed 20 miles down the highway again and it happened again at the house. Whats causing this? Vaccuum Hose? Bad air/fuel mixture? Something with throttle body? I just don't know! HELP!!!!