my heater works in my civic but only for like 10 mins then it blow nothing but cold air...please dont tell me i need a heater core... :/

ty for the help.

 

You need a new heater core. Just kidding!!! maybe......
Does your coolant gauge drop significantly at all after the 10 minutes?

 

dont be afraid if it is a core than needs replacement.
Its not terribly difficult to pull the dash and replace it.
I've done one myself recently.

 

Top off the radiator with coolant and then bleed the cooling system. Then go from there.

 

no the coolant gauge doesnt move at all and i believe i have bleed the coolant and topped it off but i will check the levels also....

ty

 

What car/engine do you have?

 

Low coolant or u got and air pocket... probably

 

93 civic si hatch with a 95 b18 integra engine

 

One thing about the heater cores, the pipes that go through the firewall are the softest crap metal available to man. If you try to pull/twist off those old crusty stuck on heater hoses with pliers you'll crush those ridiculously delicate pipes (one step up from tin foil) and possibly ruin the core for sure. I had to cut mine off with a sharp blade and replace them (good idea anyway).