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Start with Taurus Car Club Link below
Replete with diagrams and illustrations!


Unless you really want to remove the entire dash...



*** Caution ***

Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink ant that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

Heater Core

1. Disconnect the battery ground cable

2. Drain and recycle the engine coolant.

3. Remove the instrumental panel.

4. If equipped with the 5.4L 4V engine, remove the junction block splash shield.

5. If equipped with the 5.4L 4V engine, remove the bolts and disconnect the cable ends from the starter relay.

6. If equipped with the 5.4L 4V engine, remove the junction block bracket.

7. Disconnect the heater core hose couplings.

8. Remove the retaining screw and remove the A/C plenum demister adapter.

9. Disconnect the vacuum line from the A/C plenum demister adapter.

10. Remove the heater core bracket.

11. Remove the 13 plenum chamber top retaining screws.

12. Remove the plenum chamber top.

13. Remove the blend door assembly from the case.

14. Remove the heater core.

15. The installation is the reverse of the removal.


The entire dash must be removed and the air conditioner refrigerant pumped out. Only then can you remove and replace the heater core. There is no short cut or fast way to do this. The dash has to come out to access the heater box and replace the core. So the steps in replacing the heater core are to disconnect the heater hoses, remove the dash, to access the heater core cover on the front of the heater case and replace the core. Reassembly is in the reverse order as disassembly. Fill the cooling system with new coolant, and burp the air form the cooling system. Be sure to review the similar question regarding the other years Taurus - much of the same information is going to apply.

Additionally, Autozone.com offers free access to Chilton's Repair Guide - they now require free registration, but the information is well illustrated and essential to guiding you through this major project. Most of the Ford Taurus's are a 7 or 8 hour job to replace the heater core. It is a very indepth job requiring the entire dash to be removed




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Q: How do you replace the heater core in 2000-2005 Taurus - Sable?
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