Check all the wires and lines and make sure u didn't move something and check that the car is all hoked up and everything else runs then look at the engin check all wires and lines that they are hooked up correctly and go from there you might have a lose wire or a wire triped and isn't working now is all else fails then take it to a repair place and tell them what you did and whats wrong get them to toe it there if you have to maybe you just need a jump start.
behind the dash....
Replace the heater core. It is leaking.
yes. it is located behind the dash
you might be able to just go through the back of the glovebox to get to the heater core
Bad news... Entire dash must be removed. My 1995 Thunderbird heater core failed in ealy December. Bypassed it. Dealer wants $800 for labor only.
Drain the water from your 1990 Chevy Corsica cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Have you flushed the heater core?
it shouldn't
Heater Core
The heater core is inside the Hvac housing, under the dash.
comes out inside . remove glovebox and go in that way . about one hour .
Remove the water supply lines from your 1990 Ford E3 50 heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.