Recreational Vehicle Lpg Tank Valve/gauge problems of the 2009 Chrysler Pt Cruiser

Takata recall I bought a 2009 Pt Cruiser from imperial Chrysler in mendon, MA in August 2013. Immediately, it started to act up-this was sept 2013. During driving the dash lights would suddenly go on, the gauges would go up & down, and then it would stall. I would pull off the road and it would start right up, however, this could occur 3-4 more times during that day, or it wouldn't happen for a couple weeks. It was very inconsistent and extremely dangerous to drive. When imperial Chrysler had it in September 2013, they did a few different things that were not working when I bought the car, unrelated to the issue described above. They stated that they weren't experiencing the issue that I was having and couldn't find anything wrong with the car. They advised that I should leave the car for a week so they could determine what was really happening. After the car seemed to be ok until the summer of 2016 when I was driving on route 128 and the dash lights started flashing, gauges up and down and the car stalled. Thankfully I was able to pull over into the breakdown lane, where I was able to re-start the car and move on. This was a very scary position to be placed in, being on a major highway with cars racing by. As a result, I have been extremely uncomfortable driving anywhere but locally. During the nearly 4 years I have owned this car, I have put on just under $16,000 miles due to these unresolved issues. I purchased the car with just over $68,000 miles on it. As you can see, I have had no luck with the Chrysler-trained experts at imperial Chrysler. I have taken it to several local mechanics who have theories on what the problem could be. However, they cannot guarantee a solution to the problem.