My heater used to work before Really good too I got a different AC unit from another celica @ the junkyard and that one didn't work the air didn't circulate so I got rid of that one and put my old one back in Every since I put my old one back in, the heater hasn't worked If i try putting the heater on, it just blows cold air I heard the solder points can go bad over time so is that why its not working? I really don't want to take out the ac unit again but am willing to if thats what it takes to fix it
do the mod first so you have heat. then remove the control unit and re-solder the connectors on the back of the large plug.
Is your water green? If thats clogged up, the heater radiator, radiator, motor probably is too You need heaps of radiator flush for a few days, take off ALL the hoses and blow everything out several times with a garden hose Keep that water green!
It can't stick unless it's rusted up or there's something stuck in there It's a round plastic tube with a cutout in it
