These connectors requires a special tool to disconnect.
There is a spring up inside the round part of the 'female' end of the fitting - the tool slips over the pipe and the slides up inside to expand the spring, releasing the connection.
Not very expensive and widely available.
Disconnect both heater hoses from heater core and connect them together
Best to get the shop manual but basically: Reomove Heater hoses from engine block and drain. Remove glove box. Disconnect cables that connect to heater core. Disconnect heater core from firewall. Disconnect hoses from heater core. Pull heater core from under dash.
Radiator hoses,Heater hoses,Power Steering hoses,Air Conditioning hoses,Vacuum hoses,
Depends on the vehicle and somtimes engine size. B Clear.
Disconnect the negative battery cable.Discharge and recover the air conditioning system refrigerant.Disconnect the refrigerant lines from the evaporator. Plug the openings to prevent contamination.Disconnect the refrigerant lines from the accumulator. Plug the openings to prevent contamination.Remove the accumulator.Drain the cooling system into a clean container for reuse.Disconnect the heater hoses from the heater core tubes.Remove the PCM from the dash panel and move it aside. Do not disconnect the PCM harness connector.In the engine compartment, remove the heater/air conditioning housing assembly-to-chassis nuts.In the passenger-s compartment, remove the heater/air conditioning housing-to-dash panel nuts.Pull the heater/air conditioning housing assembly rearward far enough to clear the studs and air conditioning drain tube holes.Remove the heater/air conditioning housing assembly from the vehicle.Remove the upper-to-lower heater/air conditioning housing screws and remove the upper housing.Remove the heater core from the lower housing.
Follow the heater hoses from the engine. They will lead right to the heater core.
AnswerThere is no hoses on an evaporator coil.Assuming your asking about the hoses on either side- You would need to evacuate the system before even trying. So unless you have the equipment like a recovery machine and cylinder, don't even try...AnswerThe process of replacing the heater core in this generation of Taurus / Sables includes having to disconnect the AC lines.See "Related Questions" below for more
YES. You need a special tool to remove the quick disconnect hose.
Disconnect heater core inlet and outlet hoses - couple them together
Loosen the clamps and carefully twist the hose where it connects to the heater core. If you are wanting to bypass the heater core, just run one of the hoses between the two places on the motor where they connect or put a short piece of pipe between the two hoses.
Simply disconnect the heater hoses going to and from the heater, (Inlet & Outlet) at the firewall. Purchase the proper size hose coupling that will allow you to connect the 2 hoses together. Do not plug these hoses, just connect them together. The coolant will now not flow through the heater core.
Disconnect them from heater core and with a coupling and 2 hose clamps tie them together