i just recently got my car back after putting in a new distributor and fuel pump. it was running great for about a week and then yesterday it started acting funny. in the morning when its cold, when i am driving it the rpm's will jump -go from 1800 up to 2100. also it feels like it is bucking when i am driving it, not terribly bad but it feels as if i were letting off the gas really quick then putting it back in.. this is driving me nuts, let me know if you have any idea what is goin on