does anyone know why i don't get heat when the heater is turned on? what can cause this. ambient air comes in fine, just no heat.

 

could be your heater core

i have that problem with both my fbodies even tho i replaced the heater core tho

could be a clog in the line or vacuum leak or something? id love to know too

 

check your thermostat.could be stuck open not allowing your coolant to heat up.

 

yeah its most likely your heater core. try takeing it out and haveing it flushed before you shell out the money for a new one. that is what I did and it worked just fine.

 

flusha flusha heater core. Also, does car get too hot or not enough? If so, check thermostat too.

 

You don't have to take it out to flush it. Just uncork the hoses and flush it both ways with the garden hose.

 

Check your coolant, maybe you have a leak and now it's low. That also would cause your heat problem. Also if you've done anything recently to your cooling system, make sure you get all the air out of the system.

 

i have the same problem. and i tried to take the hose off from the heater core, but it didnt wanna get off, should i pull really hard??

 

You will probably need to twist the hose to break the seal.

 

then what will happen then? do i have to buy a new seal after i broke it?

 

There's no seal on it, it's like that because it's been attatched so long and the moisture gets to the rubber and causes it to stick.

 

i don't even know what a heater core looks like. i swear i'm not incompetent. i can do all basic maintainance, just never thought about heater cores before. where is it, whats it look like, how do i get it off to clean it? also where is the thermostat??

 

oh, yeah, i had to add some coolant cause it was low not too long ago. in the engine bay there was a warning that said a special procedure on how to take care of the cooling system can be found in the owners manual. unfortunately i don't have the manual. Does that have something to do with getting all the air out when putting in fluid?? if so, what is the proper service procedure for our cooling systems?

 

there is a pic of what the thermostat looks like and where it is located. just incase you cant tell its located under your air bellow and throttle body. and the heater core is located behind your glove box. its a pain in the a$$.

 

What I meant by "seal", is that the hose has sealed itself onto the core pipe. Sometimes giving the hose a twist will snap it loose.

Here is a site about flushing the core.

The heater core is like a little radiator (with no radiator cap )