I have a 2003 nissan altima i got a engine replacement last year in november now the dealer is saying i need another one because of thermostats the car was smoking and basically the head gaskets blew again i think they completely screwed me over out of money from the first time i got the engine because there is no way i should have to pay for another engine a year later but im out of a car right now its def the engine im disputing with them trying to get some answers but im without a car they are gonna charge me 1800$ for a new engine again i have 2000$ that i still owe on the car i wanna go to a auction or trade my car in but who is gonna give me anything for a broke down car and how much are they gonna give me so i wanna know is it smarter just to fix the car and pay it off then look into trading it in or since this is my second engine replacement dont waste my money just pay for another car but i still have a note to pay what do i do?