1999 Pontiac Sunfire wont turn over

Ok i had kinda the same problem. if your father or bf is decent with mechanics ask him to check any see if there is any spark if not tell him to check the cranksensor to c if there is an current going to it, also when u go to start the car is there a (theft system light that comes on in the dash and flashes if so, turn the key fully as if you were going to start the car but dont crank it and leave it be for about 15-20mins or until the light stops flashing. then turn the key off and try start again. the thing is that when u install a stereo into one of these cars theres a anti theft system that stops fuel from going to the injectors. thats why when u install a aftermarket stereo u are supose to get eh harness so that it doesnt engage the ats(anti theft system). and if there is no current going to the crank sensor cut the wire long enough to hood an extra wire to it and then hook it up to ignition fuse in the fuse box(inside the car) this will send a a current to the crank sensor so when u turn the key on it will start. this is only a temperary fix. just gives u enough time to pick up the money to bring the car to the garage and get it checked correctly. anything else just ask. Jeremy

Don't let your boyfriend install electronic equipment unless he knows what he's doing! the stereo could be the problem if it was istalled incorrectly! the positive or negative wires could be connected to the wrong wire or its shorting out your cars computer. replace all corroded connections.