You can't get there from here. The dash has got to come out, or at least partially, enough to work in behind it. I usually don't remove a dash entirely. I usually take it loose enough to "swing" it out of my way, lay it over on the passenger's side seat. I squeeze in behind the dash to access the heater core. As far as the A/C is concerned, I can't remember that far back to rememeber which side of the firewall that evap core is. If it is outside the firewall, under the hood, then you shouldn't have to touch the A/C anyway, but if it is inside the passenger's compartment, in the same box as the heater core, you have to discharge it.
behind the dash....
yes. it is located behind the dash
Bad news... Entire dash must be removed. My 1995 Thunderbird heater core failed in ealy December. Bypassed it. Dealer wants $800 for labor only.
Replace the heater core. It is leaking.
Cut both heater hoses and hook them together. Make the hose go from the motor to the radiator.
you might be able to just go through the back of the glovebox to get to the heater core
it shouldn't
Heater Core
probably the heater core is plugged
A 1000 watt generator cannot run a 1500 watt ceramic heater without having problems.
My heater core went out in my 95 Thunderbird about 3 months ago. Unless you know a ton about cars, you're gonna have to take it to a mechanic. It will be anywhere from $400-$800 to get it put in. Sucks since it's a 20 dollar part. But you gotta do what you gotta do.
You can try Stop Leak, in an emergency. The only real repair is replacement.