Fuel Injection Rail problems of the 2002 Chrysler Town & Country

We purchased a 2002 Chrysler Town & Country with 22000 miles on it in November 2003. Since then we have had it in the service department 6 times for multiple problems. We first reported a vibration in the front end and a clicking/knocking noise when turning the steering to the right. The dealer service dept. Replaced the sway bar links and bushings and could not "duplicate" the vibration problem. We took it back again 3 more time for the vibration problem until they finally replacced all 4 tires. It stiil has a vibration to this day. In between all of these visits we had it in for a fuel smell thet filled the entire house when parked in the garage. The replaced the fuel rail and o-rings. Still have a gas smell when the tank is full. Also had is back in for a steering problem after they did recall work on the power steering lines that did not get done while on the lot. When we took it back in the power steering rack siezed up in the parking lot at the dealer. They replaced the rack and pinion steering box. Now we just had to take it back again for a clicking noise in the front. They replaced the sway bar links and bushings again. They van currently has 26000 miles on it. After we purchased the van I did some research and found out that it was a rental vehicle before it was actioned to the dealer that we went to. The dealer did not divulge this information to us before signing the deal. They had the van for a total of 3 weeks for the first 2 months that we had it. Things were going well until it all started over again with the sway bar.