my car is...., a pos Options

[ToD_atheon]

ok this is whats happening to my car; ill be driving along and all of the sudden it starts running ragged, the tach goes crazy, and my car looks like it is trying to tear itself apart. it sounds like it to. i think its the o2 sensor, but its not throwing any codes so i dont know if it is or if it isnt. i also had a professional look at it, and they said it was fine, but when i was starting to driving home,it started again so i took it back(while it was still being a bastard) and he said it sounded like it was trying to fix it self and that it was he distributor.... so if you have any clues, let me know....

i just had a new flex pipe put on, can that pose any problems...???