if the primary o2 sensor goes bad or running faulty what are the symptoms? My 96 ls with minor bolt ons(tb, im, intake, exhaust fpr) has a horrible idle is runnign really rich, has misfires at idle and when cruising and want to accelerate from like 10-30% throttle it hesitates and decelerates and after a few seconds slams back to normal in a jerk. any help would be greatly appreciated

 

lol its called limped mode. Happend to me yesterday it was the worse **** ever driving from one state to anothe r.