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

[VavAlephVav]

Do you "hear" water running through the heater core when you first head off down the street? When its low or you have an air pocket that is what you hear. I would look at the mixing valve/blend door, whatever you want to call it. Here's the thing; if there is hot water flowing through the coil and the blower is pushing air across the heater core, then you should have heat. There's nothing else to it.
I Promise you that replacing the heater core is NO Fun at all. and most likely you don't need to do that unless it sprung a leak and is leaving a puddle in your floorboard.

[rapid36]

Do you "hear" water running through the heater core when you first head off down the street? When its low or you have an air pocket that is what you hear. I would look at the mixing valve/blend door, whatever you want to call it. Here's the thing; if there is hot water flowing through the coil and the blower is pushing air across the heater core, then you should have heat. There's nothing else to it.
I Promise you that replacing the heater core is NO Fun at all. and most likely you don't need to do that unless it sprung a leak and is leaving a puddle in your floorboard.

Hey thanks for your response! It's very kind of you.

And nope I don't hear any water noise or any noise for that matter when going down the street. However if I have hot water going through the inlet hose I should have hot water going through the outlet hose too shouldn't I? Cause the inlet hose is sooo hot to where I can beauty hold onto it. But the outlet hose is just warm and very cool compared to the inlet hose. Also the outlet hose gets hot when no running the fans but when running the fans the hose gets instantly cool. I personally don't think this is normal from what a ton of videos on YouTube says. That's why I'm pointing to the heater core. I would hate to replace the heater core lol but it's looking like it to me. But I will take the advise you nice people have Given me. I will check the blend door first :-). Hopefully checking that won't be as hard as checking the heater core. Does anyone know of a way to easily check the blend door? If not then no worries this weekend i will just check it per the manual online. Thank you all by the way for all of your help. Your all are amazing people you have a great community here.