89 xj advice on heater core change

[ryan iverson]

im going to be swaping out my heater core in my 89 xj i hear there a bugger so does anyone have any tips tricks or advice on this ?

 

[DaveB]

The heater box on an XJ can be split into two pieces so that you don't have to take the entire box out to get to the heater core. There are screws to take out and some bands that you cut which make the job much easier. If you want to see what to do I have a complete xj heater box out of an XJ and I can show you what needs to be done.

 

[DOSS]

The FSM says remove XYZ unclip flanges RD&F cuss miltiple times and wish that you had never had to do this....

Realy remove anything you think is in the way or might be in the way this includes little children that will hear your cussing

 

[ryan iverson]

xj

thanks guys

 

[poorboyzdreamz]

Disconnect battery ground cable, then drain cooling system.
Disconnect hoses from heater core.
If equipped with A/C, remove evaporator/blower housing as follows:
Discharge A/C system, then disconnect hoses from expansion valve.
Disconnect electrical connector and vent tube from blower motor.
Remove console, if equipped.
Remove lower instrument panel attaching screws, then the lower panel.
Disconnect electrical connections from A/C relay, blower motor resistors and A/C thermostat.
Disconnect vacuum hose from vacuum motor.
Cut evaporator/blower housing to heater core housing retaining strap, then disconnect heater control cable.
Pry retaining clip from rear of blower housing flange, then remove the three retaining screws.
Working from engine compartment, remove evaporator/blower housing attaching nuts, then the evaporator drain tube.
Remove right kick panel, then the instrument panel support bolt.
Pull right side of dash outward, then rotate housing downward and towards rear of vehicle until studs clear dash panel. Remove housing from vehicle.
Remove heater core to housing retaining screws, then the heater core.
Reverse procedure to install.










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[ryan iverson]

xj

damn straight out of the book