general problems of the 2001 Nissan Sentra

My engine failed again while driving 70 mphs on the freeway, the very day after the car had been repaired for yet another defect sensor. It was a miracle I did not crash and kill anyone including myself. Each and every time I have taken the car in, I have requested it be checked for a short in the wiring. Each time I was told no. I later learned thar meant if it didn't show up on the computer, then they wouldn't look for it specifically. Following the latest hazard, I got in Nissan's face. Nissan found a defect oxygen sensor this time. Upon retesting the vehicle, the emc (the brain of the vehicle) was found to be defective. I was also told had I driven the car any longer, the air conditioning unit would have blown too. Well, that explains all the lousy gas mileage this past year. So, here it is a week later and my vehicle remains in the shop with a back ordered emc with no available stock date in sight. I am renting a vehicle and am receiving very little assistance from Nissan as to getting a rental vehicle in the meantime. I am quite concerned I have purchased a brand new spanking yellow lemon. I am quite concerned this vehicle, even with a new emc, will produce other defective sensors once the warranty has expired due to wear and tear from the old one. There are 45 sensors in the vehicle and only 5-10 have blown so far. I am quite certain others are close to failure too. I am just as concerned when both the Nissan representative and the service manager told me this part has been on back order for a very long time as so many vehicles have endured this problme, that the vehicle has not yet been recalled.