This is a tale that goes back about a year when I found my very first car. I needed it to commute back and forth to school. When I bought the car it worked great, everything I could have wanted.
However, that soon changed when it began overheating, and to be specific it is a 2003 honda civic ex, automatic. I took it back to them after having to pay towing expenses. They said they didn't know it had issues (bull) they said it was due to a radiator, so they installed a new one.
When I got it back it drove fine then it began exhibiting the same symptoms soon after. I decided since I loved the car I wouldn't even bother with the people I bought it from, big mistake and I should have just returned it...I didn't because I was sick of looking for a car and school was about to start. This began the routine of having to fill it with antifreeze everyday before and after class, if I didn't it would most certainly overheat and then I'd have to blow hot air all day. So I took it to another mechanic who figured it must be something wrong with the cooling system and said the fan was acting slow, so he replaced the fan-switch and thermostat and said that it wasn't the water pump. I was hoping this would do it, but it did not.
He then tested the head-gasket twice and it came back negative. Then they tested the catalytic converter, came back negative. This mechanic, then proceeds to tell me the people who sold it to me may have put a sealant in which gummed up the engine and is clogging things so it can't function correctly, or put on the head-gasket wrong or any number of things to the engine. Although, wouldn't this still make the head-gasket test fail?
He tells me I may need a new engine because to figure out if it truly is an engine problem that would cost as much as a new engine. I don't know what to do or where to go I am at a loss here. Spending my money just to have mechanics tell me there is some mysterious "undiagnosable" problem with my car is the most frustrating thing ever. No one can fix this car it seems. PLEASE I beg anyone who knows how to figure this mysterious problem out!
Any help would be greatly appreciated.