How yo change the heater core - 2002 Dodge Stratus

Make sure you refilled to top antifreeze after you run motor it has to be full and will burp ounce are both sides of the heater hoses hot they have to be if one hose is not ANF the other when motor is full not the core is stoped with gunk/ rust will need take not side loose the take the remaining hose that goes yo heater core that was cold off the block leaving the loosrmef hose in yet hand then take garden hose and force wayrt through the hose backwards the gunk/ rust will whose out the pope through firewall dirt gone if the heater core is clogged completely try squeezing toilet bowl cleaner into the stopped up end otherwise get the core changed

If there is white smoke coming out of that location, chances are that you have a heater core leak. Hot radiator fluid passes through 2 smaller radiator tubes to the heater core. Air from the fan is passed over the heat exchanger, and hot air blows out. White smoke = steam. You can block off the heater core tubes until you can get it replaced.

Check: Water pump Visually observe water moving in radiator : Belt tensions : Check alum.head, they warp often those mitsubishi 4 cyl eng.

If the fan is blowing and the heater is set to HOT and very cool yo warm heat is all that comes out you will need to first need to replace the coolant thermostat...It is probably stuck open...

probable low on coolant check your coolant lvl, if it is full then you may have a restricted heater core, in the case of the heater core one of the heater hoses will be much cooler than the other, you can reverse the hoses and sometimes remove the restriction enough to make descent heat

HOW TO CHANGE A HEATER CORE IN 1990 AEROSTAR

check the heater tap,it controls the flow through the heater core,it sounds like its not opening.even google images to see what it is and where its located,its a fairly straight foward fix,depending on why the tap wont open

Do yo know if the heater core is getting Flow. when engine is warmed up. feel heater hoses hoing into and out of heater core. if both are warm then you have a blend door problem. if one is warm and one is cold and coolant is full and no air locks you have a plugges heater core. reverse flushing sometime works. otherwise it would need to be replaced.

Likely you have a leak in your heater core We have had a problem with a film on the windows on older vehicles and that was the problem

Shelley F

You dont need to remove all of those thing to do that. Working on the passenger side, remove the globe box and then the air bag, you are gonna see the bolts there. Now yo can see the black box behind the globe box? you have to remove the screws, some from the inside and some from the ouside (very hard to reach, under the box of the AC box outside).
Lifth the black box of the heater core and change it!!!