i have bought a new computer, tps sensor, distributor, fuel filter, and fixed some wiring. it was running good and then one day i hit a big dip in the road and it started acting up. it idles fine and revs up good untill 3500 rpms then it just boggs down. dont know what to do. i am thinkin it might be the fuel pump, but i dont know. any suggestions will help. thanks.