Ok..I need help also. I have a 1990 Lumina 2.5 piece of junk. I swear to you this car is POSSESSED!! We have changed everything imaginable...all sensors, plugs, wires,computer...several fuel injectors because we were convinced we were being sold the wrong one because only the old one seems to keep the car running...problem is...the car will sit and idle ok but as soon as you give it some gas it either stalls right away or backfires then stalls. Sometimes it takes 10 trys just to get it out of the driveway!!!! Does ANYONE have ANY other ideas on what is wrong with this thing???? Thanks for any help!!