<prompt> Human: I bought a 2005 Expedition nearly 6mos ago from a reputable, family-owned dealership chain, for 7k. Less than 100k mi. Just put brand new tires on it and put a new stereo in. On the way back from a camping tri the vehicle started running extremely sluggish and eventually died on the side of the hwy. No CEL. No warning. As I recently just purchased a new home and my wife is expecting we decided to try and troubleshoot it ourselves. Towed it home. Ran diagnostics. Put in new plugs. O2 sensors. Mass air filter. Fuel pump. Still running weird. So after over 1k in parts and many hours we had it towed to a local Ford facility. They said the timing chain jumped time and it would cost 2500. After they get into the engine they find out that the cams have been replaced, along with a number of components, with 3rd party parts. Basically the engine was rebuilt with cheap parts. The dealership nearly doubles the cost of the repair. None of this info was given to me from the initial dealership. The car fax did not show any work at all. We were given the option to buy a warranty on the unit at point if sale, but the cost, at 3k half of purchase price, was too much to justify. Any suggestion on recourse regarding this? Thanks.  <response>: Carfax doesnt show all repairs. It shows wrecks. Sometimes. You bought a 50k car for 7k. They most likely bought it at wholesale. Third party parts are not a red flag in particular. You can bring it to the dealership and ask if they will do something for you on it but I doubt they will. The cheap parts didnt cause the problem, and even if they did they arent liable for the damage. Sorry it happened, but I really dont think theres anything to do but fix it. 