No heat through heater, Solved! Options

[rapid36]

Hi there! I have a 1994 celica ST. I put in a 3 core all alunimum radiator and my car started overheating. It was overheating from air being in the system. I blead it out (as far as i know) and my over heating went away. now i dont have any heat coming out of my heater. I only get warm air. my inlet hose going to the heater core is hot and my outlet hose coming from the heater core is warm but no where near hot much like the air coming out of my vents. I pulled off the in let hose and verified that the heater valve was working and it is. I took off the outlet hose and stuck my garden hose into the inlet side for the heater core and turned it on full blast, there was great water flow going through it. Then I checked the blender door by change the heat to cool very quickly and heard the blender door opening and closing. My coolant was topped off as well. The only thing i can think of is air being in the heater core. I jacked up the front of the car and let the air bleed out. I think this is the correct way to bleed out a system.

This post has been edited by rapid36: Jan 13, 2015 - 10:07 PM

[rapid36]

Hmm well i bled the cooling system and there were just a few bubbles not too much coming out. This didn't fix my no heat through heater issue. I'm starting to think if something is wrong with my heater core. I checked it and ran water through it just fine but I don't know why else why i wouldn't be getting any heat. So here's something interesting that i discovered. If i let the car run without turning on the fans inside the cabin then the outlet hose gets very hot much like the inlet hose, but after i turn on the cabin fans then the hose goes warm again, really strange. I checked the radiator cap and it was brand new, it came with the radiator and have a .1 bar more psi then the factory cap did so i would think pressure is fine cause of the fact that my heater worked before and plus i don't think this will effect pressure in the system until the thermostat opens up (correct me if I'm wrong). I'm completely lost at this point. Anyone got any more ideas based on what i discovered or ideas in general? You guys have been such a great helps so far and i thank you dearly!

FYI: When i was bleeding the air out i took all of your considerations and did all of them. I was squeezing the hoses constantly (both inlet and out let heater hoses. And also inlet and outlet hoses for the radiator.) while also using the spill free funnel.

This post has been edited by rapid36: Jan 9, 2015 - 5:23 PM