Engine Exhaust System problems of the 2003 Hyundai Elantra

I purchased my car about 3 months ago. Not long after purchase, the engine line lit up. I noticed when this happened the rpm's dropped and the car would sputter. I had a mechanic look at it. He checked the car by computer and felt it needed 2 sensors. I let him replace these. 2 days after the repair the same issue began occurring again. This time, when I stopped as for a traffic light, the car would stall, all warning lights would go on, and it would take a couple of tries to start. Also, I purchased this car at arnold Hyundai in roseville, mi. They went out of business not long after I purchased the car. I took the car to another mechanic and they could find nothing wrong. I took the car to a Hyundai dealer. They thought a guide wire had come loose and repaired it. A couple days later the car was having the same problems. I took it to the dealership on December 22. They did a thorough inspection and said there is a leak in the vacuum system? also a problem with the exhaust. I'm wondering has there been a recall on this system or do have some sort of recourse?.

Ever since I have bought the 2003 Hyundai Elantra new 2 years ago, I had nothing but problems. I have had serious exhaust problems, and have been to the dealer several times about this. I have been really sick, breathing in the fumes from the car. My carbon monoxide level is high, and I have been having trouble breathing for a long time now. The dealer refuses to see a problem with the car. I have had people drive in my car, and smell this exhaust. The exhaust smells like a skunk, and backs up through the front inside vents, it smells behind the car, and I cannot open the windows, because the smell is so strong it comes through the windows when opened to. The dealer keeps saying they don't smell anything. This is a very serious matter, and it amazes me that people care about money, instead of someone's health and safety.