First of all, my car is pure evil. I have a 94 Civic Coupe DX (automatic) that loves to spend my money. Lately, it has been overheating. At first, it would overheat on those hot sunny South Carolina days when I wanted to use my AC or when I was stuck in traffic. When I would turn the heat on or accelerate, the temp would go down. My fan was apparently just stuck for awhile. I got that "fixed" until a few months later it started up again. At this point, I could see that my fan was indeed working so I took it into the shop again. I should mention that every time I take it in to the shop, they cannot replicate the problem. Have I mentioned my car is evil? So this time, they couldn't figure out what was wrong with it even though the temp was up to maybe 75% when I drove it in. Anyway, they replaced the thermostat for the hell of it. Well, that didn't fix the problem. Now, it is overheating without regard to rhyme or reason. It is when I have been driving around for maybe 15 minutes, but accelerating doesn't help and neither does turning on the heat. It hit the red line on my way home today, but somehow went down just enough to avoid total meltdown in the middle of the highway. Any ideas? Also, this may be completely unrelated, but my car has started to do some weird hesitating thing when I start it. I would appreciate any help as so far the mechanics have been none. Please keep in mind, I only have a relatively basic understanding of cars and probably wouldn't be able to actually fix much myself.

Thanks!!!