Engine won't start

SOURCE: 2002cavalier turns over but won,t start

check starter

SOURCE: I have a 1996 GMC K1500 with the 5.7L vortec that

my experiance has been to find a cracked ignition coil, to check this you need a hande triggered spray bottle with water, open the hood and locate the coil start the engine and spray the coil down with a mist look and listen for an electrical arch or if the truck simply shuts off replace the coil and be carefull(its never happened to me) you dont get shocked

SOURCE: ford 2004 e250 after cleaning/removed

If you indeed installed the positive battery cable last and the neg first you blew the computer possible, you will need a complete diagnosis.

SOURCE: 2005 freestar, turn key on

i would check the fuel filter if thats not it then it will most likely be the fuel pressure regulator make sure the vacuum line didnt fall off of it if that checks out then id say its your pump good luck i hope this helps

SOURCE: I have a 1998 Toyota

Please make no guesses, just run a complete scan on the car, because if u want to keep taking off parts n replacing them u might end up spending more than you should. From what u said it could be an ignition problem, fuel related, crank sensor, cam sensor,.... Please run a complete scan on the car.