yesterday i was driving down ther road.. and at 3 grand my car acted like it had nothing to it.. so i mashed the gas an it quit.. and it would do it again... and i mashed it again and it quit... im thinking fuel pumps going out... or something... and im missing my knock sensor and it basically running in limp mode and giving me all these retarded codes for stuff i know isnt wrong with it..! what do u ppl think it could be?????