heatercore -overheating?

i was talking to someone else who said they are replacing theyre heatercore to get rid of their overheating problem...i was like yeah but how could that affect how your car heats or cools i mean yes if u turn on heat it helps overheating...but if ure like me and drive with AC 24/7 it shouldnt help....then i got to thinking...sometimes when im trying to keep my car cool i turn on the heat and it wouldnt work...sometimes it would...could this be my problem too?

Its easy to get air trapped in the heater core, depending on how the car is jacked up, etc, when you fill the system. I used to always get air bubbles in there. Perhaps that is part of the reason he's overheating, I have no idea. But in general the heater core itself should never be causing you to overheat. Not sure I understand that one.

unless his heatercore cracked and leaks fluid causing him to lose fluid and then overheat.

I thought about that, but usuall the hot coolant flooding the passenger compartment is a bigger problem :lol: Had it happen on my 73 nova, car was undriveable before it even thought of overheating.

ok, well, its not my thermostat,its not my cap,im pretty sure its not the waterpump(im to lasy to mess with the timing belt cover and crap to get to it) and it doesnt have any apparent leaks, likewise ive mentioned b4 the water keeps turning brown, but i honestly dont think its oil....its consistency and color just arent oily. it looks almost like its the radiator leak fill fluid. (so im wondering is my radiator clogged or is there other things that i should check b4 buying a 400 radiator.)?

It could just be the silicates used on common coolant brands. This is one of the reasons I go out of my way to use silicate free coolant. I think the black havoline bottles are the most common one around. Read the back of the bottle, they should say silicate free if it is. Even still I get some brown sediment in the coolant hoses, but much much less. I used to get an overflow bottle full of "chocolate." Thats gone at least...

haha, yeah its some ICE stuff that comes in a metal can(supposed to be really good) but i switched to water when it ends up steaming away anyways. but definently looks like chocolate b4 it steams off.

so whats someone think? should i drop a fluidyne, or try getting one of those cry02 things for it? lol im so outta ideas.