Should I sell my car? And how much Is it worth?

I have a 1992 dodge dynasty and I've had it for about 3 years. Since 2011 started I've done alot of work to it because the car is getting old and parts are worn out. It has a little over 130 thousand miles on it. The transmission is barely working. I've replaced the fuel filter, fuel pump, the car has a new battery, new windshield, new motor mounts, new break lights. each time I fix a part something breaks the next week it seems like. I'm getting annoyed?