Ok, i know a bit about cars. I have a new Radiator already that was just installed couple months ago along with that a new thermostat was replaced and the fan is working fine, you know the fan that cools the engine. So i took it in to my mechanic he strictly works on Ac Radiator overheating problems. They couldn’t pinpoint why my car is overheating. They said nothing is leaking my hoses and everything are fine i have a new radiator cap. So they diagnosed it told me to take it around for a spin see if it over heats. It didn’t it didn’t until i left the mechanic then the heat needle on the dashboard started going up and up passed the water line. Almost to the Red. Pulled over put more radiator fluid. I called the mechanic he said you might need a new gasket. I have a 96 honda civic automatic. It has over 200,000 miles. The mechanic can’t figure out what else it could be besides the gasket. He said a gasket would run about 700.00. That is way to expensive right now. So what do you all think this problem sounds like? When i add radiator fluid it cools down for a little while. But if i drive and stop drive and stop the little thing on the dash goes toward hot it doesn’t stay in the middle.
My car hasn’t had a tune of but i don’t think that would cause this problem. It doesn’t help i know but i figure if i can’t fix the problem the car is going to keep doing the same thing. So i would be blowing the money on a tune up for nothing. I just want to know if it could be something else besides the gasket.