<prompt> Human: I have a 2010 Ford Escape. Blue book value is around 7 thousand. Last week I got a check engine light and the engine started doing some really strange things. I took it to a Ford dealership for service. The standard fee for diagnosing the issue is 140, but I received a call telling me that they couldnt find the problem so it would be more time and money. Today I got another call letting me know that they still cant figure out whats wrong with it, and theyve spent so much time trying to diagnose it that were going hourly now. Im at 420 now, and still no diagnosis. If I take my car back is not safe to operate, but I dont want to throw away good money after bad. At what point should I just quit?  <response>: Either theyre fleecing you or youre paying for their incompetence. Either way, take it, and your money somewhere else 