92 acura legend heater core

if your hearing this in the passenger compartment it is mostlikely the heater core. Low coolant or air that was not bled out could be the cause. If your coolant system has been neglected it is posible that blockage is causing the coolant to be diverted or just flow with exteeme turbulence.
A clogged condensation drain for the ac evaporator could leave the pan full from condesation or if the hearter core is leaking than coolant. But that would only slosh as thecar moves and water would be dripping on your feet
Sounds like its time to check your antifreeze...
...and Winter is coming!
Im so ready for season seven

Non chipped keys only open the doors, but will not make the car start.

Yes ! Try you tube !

You probably have a bad heater core. These are located in the ac heater boxes either inside the car or on the firewall box. Moisture from that box will create fog like mist on your windshield..
replace heater core, it's similar to a radiator.

what a hard question... so many things to check
.internal reg, or PCM reg.
Amp output and physical fit. pulley size, type, and clocking. connector type, and pinout., to say the least.

i picked an autostore, at random , and it dont match.
not only that, you risk blowing your engine PCM using the wrong alt.
you never said which car was the donor, so can really answer fully.
my guess the legend.

the legend has an internal reg.
the accord is PCM controlled, a hopeless match
i looked this up, on alldata.com , schematics.

the onlie last thing is to replace the thermostat. check the heater core/radiator.

Possibly valve body in steering mechanism, try changing oil in steering .
Giltronics

plugged heater core, must bring it in for proper flush.

the heater core could be clogged you might again check your coolant level just to be sure its full