Check Engine Light On problems of the 2003 Ford Taurus

I purchased the car 11/17/2018 from earls credit auto sales in portsmouth on airline blvd ; it rode well until 11/30/2018 when I drove to the barbershop in the greenbrier area of chesapeake va. I went to pull out the parking lot and my car started to shake real heavy and sloppy so I parked it and turnt it off , when I tried to start it up it would not start it kept stalling I called the dealerships auto shop they took the car and held it and claim they were working on it , I picked the car up when it was ready 12/04/2018. It rode fine until 12/14/2018 I went to the barbershop again and as I was leaving backing out my car started to shake heavily again than before I could put the car in drive to pull back in to the parking spot the car just cut off in the middle of the parking lot while a car was to the left of me trying to pull out . I had to get out and push the car in the spot and hurry and rush to push on the break and put the car in park. When I got a tow to the dealerships auto shop I explained this is my second time here under the same circumstances , I also called the dealership pleading to give the car back and to be refunded I barley got to enjoy or use the beguile without it being a problem . I was told they don't allow refunds and there auto shop will fix the car , so when they said the car was ready on 12/15/2018 it drove well but it the check engine light came on I went to auto zone for a free test and I got a po430 code , I called the auto shop before they closed because they told me on the 14th all what was wrong was a fuel pump and they replaced it but it has something to do with the catalyst system I been smelling a buring smell coming through my vents for a while but never really knew what it was . The rep on the phone told me it was fine for me to still drive the car and I also I won't be able to get my car worked on till 12/26/2018 . I need help!.

The contact owns a 2003 Ford Taurus. The contact stated that the check engine light illuminated on the dashboard. The vehicle was taken to an independent mechanic where the cam sensor was replaced. Approximately 5 months later the failure recurred and the vehicle was taken back to an independent mechanic where the cam sensor was again replaced. The failure recurred again and the vehicle was taken to an authorized dealer where the cam sensor was reset. The failure has not recurred. Approximately 1 year later while driving at approximately 20 mph the front passenger side tire blew out. Upon examining the vehicle the contact noticed the coil spring was broken and pierced the tire. The vehicle was taken to an authorized dealer where the front passenger side coil spring was replaced. The contact also stated that approximately 2 months later while attempting to operate the vehicle it would not shift into gear and would not move. The vehicle was towed to an authorized dealer where it was in the process of being diagnosed. The failure mileage was 77,000 and the current mileage was 90,600.