How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Brian Your Own Question

Brian
Brian, Auto Service Technician
Category: Ford
Satisfied Customers: 1227
Experience:  5 years Ford Technical Hotline/Service Engineer. 2005 Ford Master Cert. Automotive Technology degree
367936
Type Your Ford Question Here...
Brian is online now
A new question is answered every 9 seconds

1999 ford expedition: me a diagram of exactly where the heater core

Customer Question

can you show me a diagram of exactly where the heater core is located and what all do i remove to get to it on a 1999 ford expedition
Submitted: 8 years ago.
Category: Ford
Expert:  Brian replied 8 years ago.

This is a big job. The heater core is located in the heater case inside the dashboard. The entire instrument panel must be removed to service the heater core. It is located on the passenger side, behind the dash, inside its enclosure/plenum box.


The instructions for the heater core removal are below.


2006-08-22_141011_expedition_heater_core.zip


I tried to include the instructions for the instrument panel removal, but the pictures made the file too large.


Here is the text for the instrument panel (dashboard) removal:


Instrument Panel



Removal


CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.



  1. Move the seat fully rearward.


  1. If equipped with adjustable pedal system, move to the full forward position.



  1. WARNING: To avoid accidental deployment and possible injury, the backup power supply must be depleted before repairing or replacing any air bag system components. To deplete the backup power supply energy, disconnect the battery to starter relay cable and wait one minute.

    Disconnect the battery cables.

    1. Disconnect the battery ground cable (14301).


    1. Disconnect the battery to starter relay cable (14300) and wait one minute for the backup power supply to be depleted.



  1. Position the power distribution box aside.

    • Release the mounting tabs.



  1. Remove the bulkhead electrical connectors from inside the engine compartment.

    1. Loosen the bolts.


    1. Disconnect the bulkhead electrical connectors.



  1. Remove the bulkhead electrical connector insulator.



  1. Unclip the bulkhead electrical connectors from the dash panel.



  1. If equipped, remove the front floor console. For additional information, refer to Console—Floor, Front in this section.


  1. Remove the lower instrument panel steering column cover. For additional information, refer to Instrument Panel—Steering Column Cover in this section.


  1. Remove the valance panel.

    • Remove the two pin-type retainers and release the expander clip.



  1. Disconnect the electronic blend door actuator electrical connector.

    • Release the wiring harness locators.



  1. Remove the LH instrument panel insulator.


  1. Disconnect the climate control head vacuum harness connector.



  1. Remove the LH and RH scuff plates.



  1. Position the LH and RH door weatherstrip seals aside.



  1. Remove the LH and RH A-pillar lower trim panels.



  1. Remove the RH assist handle (31406).

    1. Remove the covers.


    1. Remove the bolts.



  1. Remove the LH and RH windshield side garnish mouldings (03598).



  1. Disconnect the brake pedal position (BPP) switch electrical connector.

    • Release the wiring harness locator.



  1. If equipped, disconnect the adjustable pedal motor electrical connector.



  1. If equipped, disconnect the adjustable pedal motor harness electrical connector.



  1. Remove the (A) radio ground and the (B) generic electronic module (GEM)/central timer module (CTM) ground bolts.



  1. Disconnect the LH instrument panel main wiring harness connectors and bulkhead connector.

    1. Loosen the bolt.


    1. Disconnect the electrical connectors and bulkhead connector.


    • Release the main wiring harness locators.



  1. Remove the instrument panel steering column opening cover reinforcement (04502).

    1. Remove the nuts.


    1. Remove the instrument panel steering column opening cover reinforcement.



  1. Disconnect the (A) air bag sliding contact electrical connectors and the (B) anti-theft sensor electrical connector.



  1. Disconnect the remaining electrical connectors on the steering column.



  1. Disconnect the transmission range indicator from the steering column.

    1. Remove the bolt.


    1. Disconnect the cable.



  1. Lower the steering column (3C529).

    1. Remove the nuts.


    1. Lower the steering column.



  1. Remove the instrument panel bolts through the steering column opening.



  1. Remove the instrument panel reinforcement bolt below the LH corner of the cigar lighter and power point.



  1. Disconnect the inertia fuel shutoff switch electrical connector.



  1. Remove the RH ground bolt.



  1. If equipped, disconnect the air suspension switch electrical connector.



  1. Remove the RH instrument panel insulator.


  1. Disconnect the RH instrument panel main harness connectors.

    • Release all the wiring harness locators from the cowl side panel.



  1. Disconnect the blower motor electrical connector.



  1. If equipped, disconnect the electronic automatic temperature control (EATC) hose from the evaporator case.



  1. Disconnect the restraint control module (RCM) electrical connector.

    1. Release the locking tab.


    1. Disconnect the RCM electrical connector.


    • Release the wiring harness locators.



  1. Position the RH front fender splash shield away from the dash panel.

    1. Remove the screws.


    1. Remove the pin-type retainer.


    1. Position the RH front fender splash shield away from the dash panel.



  1. Disconnect the antenna lead-in cable from the antenna base.



  1. Feed the antenna lead-in cable through the body.

    1. Unseat the antenna lead-in cable grommet.


    1. Feed the antenna lead-in cable through the cowl side panel.



  1. Remove the instrument panel relay cover (044F46).

    1. Remove the instrument panel relay cover.


    1. If equipped, disconnect the autolamp sensor electrical connector.


    1. If equipped, disconnect the sunload sensor electrical connector.



  1. Remove the glove compartment. For additional information, refer to Glove Compartment .



  1. WARNING: Always wear safety glasses when removing and handling an air bag.


    WARNING: Carry a live air bag with the bag and trim cover pointed away from your body. An accidental deployment will then deploy with minimal chance of injury.


    WARNING: Place a live air bag on a bench or other surface with the trim cover up.

    Remove the passenger side air bag module (044A74).

    1. Disconnect the electrical connector.


    1. Remove the screws.


    1. Remove the passenger side air bag module.



  1. Remove the instrument panel bolts through the passenger side air bag module opening.



  1. Remove the instrument panel bolt on the relay bracket.



  1. Remove the instrument panel reinforcement bolt below the LH corner of the glove compartment.




  1. NOTE: Position the carpet aside.

    Loosen the instrument panel floor brace.

    1. Remove the upper instrument panel floor brace bolt.


    1. Loosen the instrument panel brace bolts and nut.



  1. Remove the RH instrument panel cowl side nut.



  1. Remove the LH instrument panel cowl side nut.



  1. On Expedition vehicles, remove the instrument panel cowl top bolts.

    1. Remove the covers.


    1. Remove the bolts.



  1. On Navigator vehicles, remove the instrument panel defroster grille assembly.



  1. On Navigator vehicles, remove the instrument panel cowl top bolts.




  1. NOTE: Two technicians are required to perform this step.


    NOTE: Two bullet connectors secure the instrument panel to the bulkhead.

    Remove the instrument panel (04304).


Installation


CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.




  1. NOTE: Two technicians are required to perform this step.

    Align and position the instrument panel with the clips in the sheet metal.



  1. On Navigator vehicles, install the instrument panel cowl top bolts.



  1. On Navigator vehicles, install the instrument panel defroster grille assembly.



  1. On Expedition vehicles, install the instrument panel cowl top bolts.

    1. Install the bolts.


    1. Install the covers.



  1. Install the LH instrument panel cowl side nut.



  1. Install the RH instrument panel cowl side nut.




  1. NOTE: To prevent any squeaks or rattles, install and tighten the upper instrument panel floor brace bolt first, and then tighten the floor brace bolts and nut.


    NOTE: Reposition the carpet after this step is performed.

    Install the instrument panel floor brace.

    1. Install the upper instrument panel floor brace bolt.


    1. Tighten the instrument panel floor brace bolts and nut.



  1. Install the instrument panel reinforcement bolt below the LH corner of the glove compartment.



  1. Install the instrument panel bolt on the relay bracket.



  1. Install the instrument panel bolts through the passenger side air bag module opening.

    • Install the RH bolt first.




  1. WARNING: Never probe the connectors on the air bags. Doing so may result in air bag deployment, which could result in personal injury.


    WARNING: Always wear safety glasses when repairing an air bag vehicle and when handling an air bag.


    WARNING: Carry a live air bag with the bag and trim cover pointed away from your body. An accidental deployment will then deploy with a minimal chance of injury.

    Install the passenger side air bag module.

    1. Position the passenger side air bag module.


    1. Install the bolts.


    1. Connect the electrical connector.



  1. Install the glove compartment. For additional information, refer to Glove Compartment .


  1. Install the instrument panel relay cover.

    1. If equipped, connect the sunload sensor electrical connector.


    1. If equipped, connect the autolamp sensor electrical connector.


    1. Install the instrument panel relay cover.



  1. Feed the antenna lead-in cable through the cowl side panel.

    1. Feed the antenna lead-in cable through the cowl side panel.


    1. Seat the antenna lead-in cable grommet.



  1. Connect the antenna lead-in cable to the antenna base.



  1. Install the RH front fender splash shield.

    1. Position the RH front fender splash shield.


    1. Install the screw.


    1. Install the pin-type retainers.



  1. Connect the RCM electrical connector.

    1. Connect the RCM electrical connector.


    1. Tighten the bolt.


    • Insert the wiring harness locators.



  1. If equipped, connect the EATC hose to the evaporator case.



  1. Connect the blower motor electrical connector.



  1. Connect the RH instrument panel main harness connectors.

    • Insert all the wiring harness locators into the cowl side panel.



  1. Install the RH instrument panel insulator.


  1. If equipped, connect the air suspension switch electrical connector.



  1. Install the RH ground bolt.



  1. Connect the inertia fuel shutoff switch electrical connector.



  1. Install the instrument panel reinforcement bolt below the LH corner of the cigar lighter and power point.



  1. Install the instrument panel bolts through the steering column opening.



  1. Position the steering column.

    • Install the steering column support nuts.



  1. Connect the transmission range indicator to the steering column.

    1. Connect the cable.


    1. Install the bolt.



  1. Connect the remaining electrical connectors on the steering column.



  1. Connect the (A) air bag sliding contact electrical connectors and the (B) anti-theft sensor electrical connector.



  1. Install the instrument panel steering column opening cover reinforcement.

    1. Position the instrument panel steering column opening cover reinforcement.


    1. Install the nuts.



  1. Connect the LH instrument panel main wiring harness connectors and bulkhead connector.

    1. Connect the LH instrument panel main wiring harness connectors and bulkhead connector.


    1. Tighten the bolt.


    • Insert the main wiring harness locators.



  1. Connect the radio ground and the GEM/CTM ground bolts.



  1. If equipped, connect the adjustable pedal motor harness electrical connector.



  1. If equipped, connect the adjustable pedal motor electrical connector.



  1. Connect the BPP switch electrical connector.

    • Insert the wiring harness locator.



  1. Install the LH and RH windshield side garnish mouldings.



  1. Install the RH assist handle.

    1. Position the assist handle.


    1. Install the bolts.



  1. Install the LH and RH A-pillar lower trim panels.



  1. Install the LH and RH door weatherstrip seals.



  1. Install the LH and RH scuff plates.



  1. Connect the climate control head vacuum harness connector.



  1. Install the LH instrument panel insulator.


  1. Connect the electronic blend door actuator electrical connector.

    • Insert the wiring harness locators.



  1. Install the instrument panel floor duct panel.

    • Install the two pin-type retainers and insert the expander clip.



  1. Install the lower instrument panel steering column cover. For additional information, refer to Instrument Panel—Steering Column Cover in this section.


  1. If equipped, install the floor console. For additional information, refer to Console—Floor, Front in this section.


  1. Clip the bulkhead electrical connectors into the dash panel.



  1. Install the bulkhead electrical connector insulator.



  1. Connect the bulkhead electrical connectors from inside the engine compartment.



  1. Install the power distribution box into the mounting tabs.




  1. NOTE: When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

    Install the battery cables.


  1. Adjust the transmission range indicator. For additional information, refer to Section 307-05 .



JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Last | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Ford Technician

    Satisfied Customers:

    22382
    16 years experience with Ford.
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Ford Technician

    Satisfied Customers:

    5493
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    1684
    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    1518
    12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2014-4-1_23659_avatar.64x64.jpg Mike V.'s Avatar

    Mike V.

    Auto Service Technician

    Satisfied Customers:

    789
    25 years experience on all makes and models, Licensed NYS Inspector.
  • http://ww2.justanswer.com/uploads/lostrider/2009-9-26_23144_php4VNWAA_c1PM1.jpg lostrider's Avatar

    lostrider

    Ford Technician

    Satisfied Customers:

    2940
    ASE Master Technician, Ford Senior Master Technician,Diesel certified, ASE Master, 22 yrs FORD exp.