How do you replace the heater core?
Nov 27, 2006 at 11:45 AM
Drain the coolant first. The heater core is behind the dash on the passenger side and usually requires loosening the dash. Disconnect the two heater hoses, loosening the clamps at the firewall under the hood if needed, then replace the core.
The owner asked how to replace the heater core on a Mercury Sable. The expert said it is behind the passenger-side dash, usually requiring the dash to be loosened, and that the two heater hoses and firewall clamps must be freed after draining the coolant.