I recently purchased a 91 integra Da b18a1 5 spd and have been getting this overheating problem.

Everytime I drive it and take her past about 3500 rpm, the temp gauge will get about more than half way and the cel will go on. I usually pull over and I notice that coolant is bubbling in the resorvier. It feels like there is a lot of pressure in the system cause one time, I opened the rad. cap when hot and literally a volcano shot up. There is no leaks in the system as I know off. I checked the top rad. hose and it s really hot, but the bottom one is not hot at all, I feel like it could be the thermostat? Again, when i'm driving around in the city shifting at 2.5k rpm, it'll stay in reg temp range but only when i'm on the free way and take it past 3.5k rpm will it overheat. Helpppp!.

Any suggestions would be helpful. Thanks for reading!@

 

well the thermostat is a GREAT place to start if it Keeps doing it get a Carbon test done or a Cooling system pressure test. also you might need a Rad flush.

Also replace the Rad Cap it might be sticking and that can cuase the radiator or hoses to burst.

 

bump

 

Why are you bumping this? Did you do any of the suggestions from Solster? Bumping won't fix anything for you. If you did do it, instead of saying "bump", why don't you say what you did and the results?