please, i need help. my car was at the shop at school wed night and i told the teacher i would be back thursday night to replace the fuel pump/filter. i got there an hour before i said i would and it was already done. (awesome...right?...............WRONG!) i look in the car, and the o-ring is still on the pass. seat. (GREEEAAAAATT) and now the car will not stay started for more than 1 second (literally) and when it is started it misfires BAD. do you think the o-ring not being on there would cause that (fuel tank pressure sensor) or do our cars have a fuel pump resistor like the gtp's do? BTW it is a 1997 CAVALIER Z24 Or do you think it could be something else? (BTW, the relay is clicking)