Heater core how do i change the heater core on a 1986 cutlass ?

Remove dash

disconnect heater core hoses in the engine compartment

open heater box, and remove the heater core.

SOUNDS LIKE THE HEATER CORE HAS BEEN BYPASSED, DID YOU JUST GET THE CAR?

bloody hard recently changed mine in a3 sport ended up in a right mess label , mark every item even take pics on mobile phone

i need see the steps to changing a heater core in a 87 oldsmobile cutlass supreme

If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

The heater housing is disassembled to get to the heater core. Heater Core

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

basically you have to remove the dashboard on the passenger side not a easy job

replace blower control module

there is no easy way to change out a heater core...you have to take the bottom part of the dash loose and that takes some doing. once you get the bottom of the dash apart you will see the heater core.then you have to go under the hood and unhook both water lines that run to it, you should then be able to pull the heater core out and install the new one

The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.
if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

how do i replace a heater core in a 1992 ford f-150