Question about 1987 Toyota 4Runner

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87 4runner heater difficuly

I have disassembled most of my dashboard, instrament pannel and stereo mount to remove disfunctional heater core, but I am unable to get it past the AC unit. The Chiltons book pictures show the AC not in the way for removal. How can I remove the heater unit easily, hopefuly w/o draining and removing the air conditioner unit

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It is possible because I did it. I remember it being quite tricky and frustrating. Cant remember exactly how but I removed almost the whole dash and ducting but did not have to remove any A/C components.

Posted on Sep 07, 2009

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Do you have to remove dashboard on a 1990 geo storm gsi to remove and reinstall the heater core. can you give me the step by step if the dashboard does not have to be removed.


log in to alldata.com and read that? its there?
anyone can,


  1. Disconnect the negative battery cable. Drain the cooling system.
  2. remove core hoses passing thru fire wall.
  3. Remove the three duct mounting screws.
  4. Disconnect the duct between the blower assembly and the heater unit.
  5. Remove the five screws attaching the mode control case to the heater core case.
  6. Remove the mode control case. Do not remove the link assembly.
  7. Remove the five screws to separate the two halves of the heater core case.
  8. remove the core.

Feb 24, 2015 | 1990 Geo Storm

1 Answer

Replace heater core


Instructions
    • Drain the cooling system. Draining the cooling system will prevent toxic engine coolant from leaking into the passenger cabin of the vehicle during removal of the heater core. To drain the cooling system, simply disconnect the lower radiator hose from the radiator by loosening the hose clamp and pulling the hose off. Be sure to drain the fluid into a sealable container and dispose of the coolant at an appropriate disposal site.
    • 2Pull the dashboard six inches rearward. In order to do this, you must remove the following parts; the center dash bolt (located under the defroster vent cover), the bolts under the driver and passenger kick boards, the bolt connecting the dashboard to the radio mount, and the the bolt connecting the dashboard to the rear of the glove box. The locations of these bolts are immediately apparent upon looking under the dash. Once you have removed these bolts, you can pull the dashboard rearward and secure it.
    • 3Remove the heater core box. The heater core box is a black plastic box that surrounds the heater core. This part should be visible when looking down into the dashboard from the passenger side seat. Remove the two bolts on top holding it to the firewall and another on the bottom near the foot well. After removal of these bolts, the heater core and box are attached to the vehicle only by the coolant lines, which you can now disconnect by reaching into the box and pulling them off of the heater core (you may have to loosen the clamps first).
    • 4Install the new heater core. This is accomplished by applying steps 1 through 3 in reverse order; re-connect heater core coolant line, re-install heater core box (be sure to apply silicon sealant to the edges of the box, hermetically sealing it), replace the dashboard and install bolts, and re-fill the cooling system.



Oct 22, 2012 | 1999 Chrysler 300M

1 Answer

Replace heater core in a 97 chrysler sebring lxi


Check this procedure for Sebring Coupe and Avenger (see Figure 3)...

Disconnect the negative battery cable.

CAUTION
The vehicles covered by this guide are equipped with a Supplemental Restraint System (SRS), which uses air bags. Whenever working near any of the SRS components, such as the impact sensors, air bag modules, steering column and instrument panel, disable the SRS, as described earlier in this section.

Remove the instrument panel from the vehicle, as outlined in General Information & Maintenance 0 of this repair guide.
Drain the cooling system into a suitable container, then disconnect the heater hoses from the dashboard panel. Plug the heater core outlets to prevent coolant from spilling during unit housing removal.
Remove the center stay.
Remove the lap cooler duct mounting screw. Remove the center duct.
Remove the left and right rear heater ducts.
Remove the foot distribution duct.
If equipped with A/C, remove the cooling unit mounting nut and bolt.
Remove the retainer clip, then the heater unit.
Remove the heater core.

12_20_2011_3_30_32_pm.gif

Click image to see an enlarged view

Fig. 3: Exploded view of heater unit and core assembly (ZOOM LINK HERE)

To install:
Install the heater core into the heater housing.
Install the heater housing and retainer clip into the vehicle.
If equipped with A/C, install the cooling unit mounting bolt and nut.
Install the foot distribution duct. Install the left and right rear heater ducts.
Install the center duct, then install the lap cooler duct mounting screw.
Install the center stay and connect the heater hoses to the heater core at the dashboard panel.
Install the instrument panel.
Fill the cooling system to the proper level.
Connect the negative battery cable.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Dec 20, 2011 | Cars & Trucks

1 Answer

Looking for where the heater cord is located?


To remove and installing the Heater Core, check this procedure...
  1. Disconnect and plug the heater hoses at the firewall.
  2. Disconnect the heater valve control cable.
  3. Remove the heater unit attaching nut on the firewall.
  4. Remove the dashboard as follows:
    1. Remove the center panel.
    2. Disconnect the wire connectors at the fuse box.
    3. Disconnect the sunroof switch connector, if equipped.
    4. Disconnect the ground cable at the right of the steering column and the power mirror switch wire connector.
    5. Remove the side air vent knob and face plate.
    6. Remove the screws attaching the air vent control lever.
    7. Remove the center panel, radio and heater control head.
    8. Remove the gauge upper panel (4-door) or instrument panel (3-door).
    9. Disconnect the speedometer cable.
    10. Remove the center upper lid.
    11. Remove the side defroster garnishes on both ends of the dash.
    12. Lower the steering column.
    13. Remove the dashboard mounting bolts.
    14. Lift and remove the dashboard assembly.
1. Remove the heater duct.

zjlimited_113.jpg

Fig. 1: Removing the heater duct assembly

  1. Remove the steering column bracket and duct assembly.
  2. Remove the heater assembly mounting bolts.
  3. Remove the heater assembly and remove the heater core.
zjlimited_114.jpg

Fig. 2: Removing the heater case assembly

zjlimited_115.jpg

Fig. 3: Removing the heater core from the heater case


Hope this helps (remember to rate this answer).

Nov 23, 2010 | 1992 Honda Civic

1 Answer

Heater core removel 1996 ford explorer


The dashboard will need to be removed and then the a/c plenum,once the plenum is removed it must be disassembled to remove the heater core.

Sep 21, 2010 | 1996 Ford Explorer

1 Answer

How do I remove heater core on 1997 dodge stratus


prev.gif next.gif Heater Core REMOVAL & INSTALLATION Cirrus, Stratus, Sebring Convertible and Breeze
  1. Disconnect the negative battery cable.
  2. Remove the radio/HVAC control module bezel. CAUTION
    The vehicles covered by this manual are equipped with a Supplemental Restraint System (SRS), which uses air bags. Whenever working near any of the SRS components, such as the impact sensors, air bag modules, steering column and instrument panel, disable the SRS, as described earlier in this section.
  3. Remove the right instrument panel side trim.
  4. Remove the two retaining screws at the lower right side support beam.
  5. Remove the instrument panel support bolt at the A-pillar.
  6. Remove the left instrument panel side trim and upper instrument panel bezel.
  7. Remove the lower knee bolster and console screws at the instrument panel.
  8. Remove the gearshift knob and shifter bezel.
  9. Remove the mounting screws at the front and rear of the floor console. Remove the front and rear console halves.
  10. Remove the right side instrument panel support strut.
  11. Drain the cooling system into a suitable container, then disconnect the heater hoses at the cowl panel. Plug the heater core outlets to prevent coolant from spilling during unit housing removal. Fig. 1: Remove the heater core cover 90906g01.gif
    Fig. 2: Remove the heater core 90906g02.gif

  12. Remove the mounting screws and heater core cover.
  13. Remove the heater core from the vehicle. To install:
  14. Carefully position the heater core unit into the heater housing.
  15. Install the heater core cover onto the heater housing and tighten the mounting screws.
  16. Install the right side instrument panel support strut.
  17. Install the front and rear console halves.
  18. Install the shifter bezel and gearshift knob.
  19. Install the lower knee bolster and console screws at the instrument panel.
  20. Install the upper instrument panel bezel and left instrument panel side trim.
  21. Install the instrument panel support bolt at the A-pillar.
  22. Install the two retaining screws at the lower right side support beam.
  23. Install the right instrument panel side trim.
  24. Install the radio/HVAC control module bezel.
  25. Fill the cooling system to the proper level.
  26. Connect the negative battery cable.
Sebring Coupe and Avenger
  1. Disconnect the negative battery cable. CAUTION
    The vehicles covered by this manual are equipped with a Supplemental Restraint System (SRS), which uses air bags. Whenever working near any of the SRS components, such as the impact sensors, air bag modules, steering column and instrument panel, disable the SRS, as described earlier in this section.
  2. Remove the instrument panel from the vehicle, as outlined in Section 10 of this manual.
  3. Drain the cooling system into a suitable container, then disconnect the heater hoses from the dashboard panel. Plug the heater core outlets to prevent coolant from spilling during unit housing removal.
  4. Remove the center stay.
  5. Remove the lap cooler duct mounting screw. Remove the center duct.
  6. Remove the left and right rear heater ducts.
  7. Remove the foot distribution duct.
  8. If equipped with A/C, remove the cooling unit mounting nut and bolt.
  9. Remove the retainer clip, then the heater unit.
  10. Remove the heater core. Fig. 3: Exploded view of heater unit and core assembly 90906g03.gif
    To install:
  11. Install the heater core into the heater housing.
  12. Install the heater housing and retainer clip into the vehicle.
  13. If equipped with A/C, install the cooling unit mounting bolt and nut.
  14. Install the foot distribution duct. Install the left and right rear heater ducts.
  15. Install the center duct, then install the lap cooler duct mounting screw.
  16. Install the center stay and connect the heater hoses to the heater core at the dashboard panel.
  17. Install the instrument panel.
  18. Fill the cooling system to the proper level.
  19. Connect the negative battery cable.

Jul 08, 2010 | 1997 Dodge Stratus

1 Answer

Need to replace heater core on 96 tbird....I have Instrument panel out.....glove box out.....center console (climate control unit and stereo) out......have heater hoses disconnected and two mounting nuts...




Section 12-03A: Air Conditioning System—Manual A/C-Heater 1996 Thunderbird, Cougar Workshop Manual REMOVAL AND INSTALLATION Heater Core Removal
  1. Partially drain the cooling system.
  1. Remove the tube gasket from the heater core tubes.
  1. Remove four heater core access cover retaining screws, and remove the access cover from the A/C evaporator housing (19850).
  1. Remove A/C electronic door actuator.
  1. Slide heater core (18476) and seals from the A/C evaporator housing (19850).
Installation
  1. Install the heater core (18476) in the A/C evaporator housing (19850) with the tube gasket on the outside of the case.
  1. Install the A/C electronic door actuator as described.
  1. Position the heater core cover on the A/C evaporator housing (19850). Install the four retaining screws.
  1. Refill the cooling system.


    Heater Core





    Item Part Number Description 1 18596 Heater Core Tube Gasket 2 18476 Heater Core 3 18B300 Heater Core Cover 4 390747-S2 Screw (4 Req'd) 5 18N267 Heater Core Cover Seal
  2. 3e541cd.gif

      Feb 16, 2010 | 1996 Ford Thunderbird LX

      1 Answer

      Heater Core


      1) disconnectnegative battery cable
      2) remove coolant reservoir
      3) dis-connect heater hoses from heater core and plug holes in heater core, some coolant will drain out
      4) remove mounting bolts and nuts on fire wall
      5) remove glove box liner and door
      6) lable and dis-connectheater controls
      7) dis-connectand remove computer and mounting bracket
      8) move radio antenna wire
      9) remove kick pannel and un-bolt lower corner of dash
      10) remove screws and nuts holding the housing inside the cab
      11)remove the heater housing from the vehicle
      12) detatch the core retaining straps and remove the heater core
      13) installation is this procedure in reverse
      I hope that this fixes your problem good luck and please take the time to rate this response.

      Oct 17, 2008 | Chevrolet Suburban 1500 Cars & Trucks

      2 Answers

      How to replace heater core 93 honda del sol


      Heater Core Honda Civic/CRX/del Sol 1984-1995 Repair Guide REMOVAL&INSTALLATION
      See Figures 1, 2 and 3
      REMOVAL & INSTALLATION
      1. Disconnect the negative battery cable and disable the SRS system (if equipped.)
      WARNING All SRS wire harnesses are covered with a yellow insulation. Read the SRS precautions found in this section and install the short connectors as described.
      1. Properly drain the cooling system.
      2. Disconnect and plug the heater hoses at the firewall.
      3. Disconnect the heater valve control cable.
      4. Remove the heater unit attaching nut on the firewall.
      5. Remove the dashboard as follows:
        1. Remove the center panel.
        2. Disconnect the wire connectors at the fuse box.
        3. Disconnect the sunroof switch connector, if equipped.
        4. Disconnect the ground cable at the right of the steering column and the power mirror switch wire connector.
        5. Remove the side air vent knob and face plate.
        6. Remove the screws attaching the air vent control lever.
        7. Remove the center panel, radio and heater control head.
        8. Remove the gauge upper panel (4-door) or instrument panel (3-door).
        9. Disconnect the speedometer cable.
        10. Remove the center upper lid.
        11. Remove the side defroster garnishes on both ends of the dash.
        12. Lower the steering column.
        13. Remove the dashboard mounting bolts.
        14. Lift and remove the dashboard assembly.
      6. Remove the heater duct.
      0900c15280061a21.jpgFig. 1: Removing the heater duct assembly
      1. Remove the steering column bracket and duct assembly.
      2. Remove the heater assembly mounting bolts.
      3. Remove the heater assembly and remove the heater core.
      0900c15280061a22.jpgFig. 2: Removing the heater case assembly 0900c15280061a23.jpgFig. 3: Removing the heater core from the heater caseTo install:
      1. Install the heater core into the heater unit.
      2. Install the heater assembly and the attaching bolts.
      3. Install the heater duct and steering column bracket.
      4. Install the dashboard assembly. Tighten the mounting bolts until just snug.
      5. Raise and attach the steering column.
      6. Install the center upper panel.
      7. Connect the speedometer cable and install the instrument gauge assembly.
      8. Install the control head, radio and center panel.
      9. Install the side vent and face plate.
      10. Connect the ground cable at the right of the steering column and the power mirror switch wire connector.
      11. Connect the sunroof switch connector, if equipped.
      12. Connect wire connectors at fuse panel.
      13. Install the heater unit attaching nut on the firewall.
      14. Connect the heater valve control cable.
      15. Connect the heater hoses at the firewall.
      16. Connect the negative battery cable.
      17. Fill, bleed and leak check the cooling system.

      Sep 01, 2008 | 1996 Honda Accord

      1 Answer

      How to replace heater core on 89 s15


      disconnect negative battery cable
      remove coolant reservoir
      dis-connect heater hoses at heater core
      remove mounting screws and nuts from the heater housing in the engine compartment
      remove glove box door and liner
      disconnect heater controls ( be sure to lable them so you know where to put them later )
      disconnect the computer ( ECM ) an mounting bracket
      remove the radio antenna cable
      remove the kick pannel and detech the right lower corner of the dash pannel.
      pull the heater assembly to the rear for access and dis-connect the wiring harness
      remove the screws and nuts retaining the heater housing inside the cab
      remove the heater housing from the vehicle
      detach the core retaining straps
      and wala you got it
      to install it just reverse these steps.
      good luck

      Jun 16, 2008 | 1988 GMC S-15

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