Heater doesn't work

It sounds like the blend door actuator isn't working right. If you feel comfortable enough and have a digital multi meter I can walk you throught the tests to make sure. Let me know what you would like to do and we will go from there.

So I need to know if you have automatic a/c heating or manual. Meaning do you have climate control or not. Your radiator is full right? Get back to me so I can get the correct procedures for testing. Thanks.

Ok first you need to check the temperature door cable to make sure it is connected and not bend or bound up here is a pic of the heater system hope this helps let me know what you find and we go to the next step. The cable is number 7

Is the door closing all the way? If so then you will need to let the car get to operating temp and then feel the heater hoses are they the same temp? If not the heater core may be pluged.

Ok how a heater system works is the engine gets hot (operating temp) and so the coolant gets hot this makes the heater core hot and the blend door directs the air through the heater core warming the air. So if the hoses to the core are not getting warm then make sure the coolant in the radiator is full and do me one more favor after the car is warmed up the upper radiator hose should be hot and the lower hose should be cooler by about 30 deg. Let me know what you find so I can try to point you in the right direction. If you have any pic you would like to include that might help or are just in question feel free to add them. Thanks.

Then it should be a blend door problem in some way. Either it is not shutting all the way and directing the air the through the heater core or maybe something fell down the vent like a pen or something and is stopping the door from closing. Is there an access to the blend door area so you can look to see if anything is in it?

Ok if you refer back to were the pic is you will see number 4 this is the blower motor. It looks rather easy to remove so unplug it and remove it now the door should be cable operated so there is no need to have the car runnig. Reach up in the hole and make sure nothing is in there that may have dropped down through the vents and then use the temp control and move it from cool to warm and see if the door opens and shuts all the way. Let me know what you find and we will go from there.

Ok if I understand you correctly you just romoved the air filter for the engine. The heater box is inside the car behind the glove box. So if you look under the dash behind the glove box you should see the blower motor looking down at you. If you look at the pic I send and will include again it is number 4. Let me know how it goes.

Ok that thud is the door shutting now you need to look at the cable and such as you move the temp control and see if anything is binding as you move it. When you do not hear that thud means that the door didn't move now the question is why. From what I can find on your system is sounds like the temp control module is not working correctly. This module controls the operation of the temp the door and such. Now when you put it to heat and you hear that thud then start the car and let get to operating temp does it blow warm or hot air then? If so then the Module is you problem. Get back to me with what you find.

Do you have a fresh air option? If so if you go to recirculate will that change?