Mechanics

HEATER CORE REPLACEMENT

1998 Dodge Durango

Heater problem
1998 Dodge Durango V8 Four Wheel Drive Automatic 121000 miles

I have checked numerous sites about heater core replacement in a 98' Durango and all but your site say dash must be removed to get to it. Is this true? This is in my daughters car and was thinking I would have to take to a shop and pay around $1000 to have done. The other sites also say you need to evacuate air conditioner and disconnect airbag. Please provide more information.

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5pinejacs
March 7, 2010.



All of the above is true! Instrument panel, A/C discharge, and even steering column is advised, but not mentioned. Air bag disable too!
1. Disconnect negative battery cable. Drain cooling system. Remove instrument panel. 2. In engine compartment, disconnect heater hoses and plug all openings. Remove 4 heater assembly nuts from engine compartment firewall. Inside vehicle, remove heater assembly support brace screw, and swing support brace out of way. Move passenger seat rearward. 3. Carefully pull heater assembly rearward until studs and heater core tubes clear firewall. Lower heater assembly and rotate assembly until studs are facing downward. Remove heater assembly from vehicle. 4. Place heater assembly on work bench with assembly housing cover facing down. Remove 2 screws securing heater assembly housing cover to blower motor housing cover. Unplug vacuum harness connector from panel/defrost door actuator. 5. Remove floor duct from heater assembly housing. Remove 2 screws securing heater assembly housing cover to lower housing near floor outlet. Turn assembly over. Disengage vacuum harness retainer and vacuum harness. Remove 13 screws securing housing cover. 6. Remove blend-air door lever. Gently pry panel-defrost door lever off. Pull up on heater assembly housing cover far enough to separate cover sealant and remove cover. Installation - Ensure blower motor housing cover sealant is in place and in good condition. To complete installation, reverse removal procedure.

Merlin2021
Mar 7, 2010.


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