i have a 90 crx w/ a b18a1, i recently came into a couple of problems. first my car wouldnt idle right, then it would die. then finally it wouldnt go past 3 grand, so at that point i had to do something. 5/19 i replaced the tps sensor, and the distributor. everything was fine until tonight it studders at 1500 rpm's then it picks back up again, COULD IT BE THE TIMING THAT IS DOING THIS OR A NASTY TANK OF FUEL?