Okay so you looked.. now here is the question.. changed the cam shaft sensor.. just the sensor. not the shaft LOL... now car is doing the same thing. jumping tach , crappy idle.. and check engine light goes off and on. also . sometimes car runs fine. other times like crap. any ideas. remember , this car just had a starter, a seloniod , and a cd player, and a lot of foul language from me so i could bring it home. now it is doing this, any ideas?