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Front heater core removal

How do you get to the front heater core??

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The dash has to be moved out of the way to gain acces to the heater case. The top of the case has to be removed and the temp door also has to bee moved out of the way. It is a big job.

Posted on Oct 08, 2009

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Replace heater core


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Oct 09, 2015 | 2000 Oldsmobile Intrigue

1 Answer

1994 F-250 Heater Core


Answer for a 1995 F250:

Remove the glove-box door. Behind that is the heater core cover on the interior, passenger side of the firewall. Remove that cover and there is the heater core. Open the hood and look where the heater hoses enter the front right passenger area of the exterior side of the firewall. Disconnect the two heater hose clamps and you can then remove the heater core.

Jan 13, 2012 | 1994 Ford F250 Supercab

2 Answers

Where is the heater core on a 2005 grand caravan


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 22, 2010 | 2005 Dodge Caravan

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

Replace heater core


Disconnect heater core hoses. Remove glove box assembly. Remove the 8mm screws holding the cover on over the heater core. There may be a module in front of the cover. Move module out of way. Carefully disconnect heater control cable. The heater core should come out .

Jan 22, 2010 | 1991 Ford F150

1 Answer

Need to replace heater core


big job, dificulty 8 on a 10 scale Heater Air Plenum Chamber Removal
  1. Remove heater outlet floor duct (18C433) as described.
  1. Remove instrument panel (04320). Refer to Section 01-12 .
Instrument Panel SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Radio Removing Tool 415-001 (T87P-19061-A)
Removal and Installation
  1. Disconnect battery ground cable (14301).
  1. Remove RF wheel and tire assembly. Refer to Section 04-04 .
  1. Remove three nuts in radiator coolant recovery reservoir area.
  1. Remove bolt retaining front fender apron (16054) to front fender (16005) .
  1. Position front fender splash shield out of the way.
  1. Lower vehicle.
  1. Tag and remove main harness connector from jumper harness (located in front of blower motor).
  1. Remove steering column. Refer to Section 11-04 .
  1. Remove RH cowl side trim panel (02344) and LH cowl side trim panels (02345) .
  1. Tag and disconnect wiring connectors in LH and RH cowls.
  1. Remove ground wire located on LH cowl side.
  1. Remove RH instrument panel upper moulding (04268) and LHinstrument panel moulding (04389) from instrument panel (04320) by pulling away from instrument panel and snapping out of retainers. Disconnect wiring connectors as required.
  1. Remove glove compartment (06010).
  1. Remove instrument panel upper finish panel (044A90) and disconnect the A/C sunload sensor (19E663) and anti-theft indicator, if equipped.
  1. Disconnect the heater water hoses (18472) from the heater core tubes. Plug the ends of the heater water hoses to prevent coolant loss.
  1. Plug heater core tubes securely to prevent coolant leakage from heater core (18476).
  1. Remove one nut retaining the upper LH corner of the A/C evaporator core housing (19A559) to the dash panel (01610) .
  1. Disconnect two vacuum supply hoses from vacuum source. Push grommet and vacuum supply hose into passenger compartment.
  1. Disconnect wiring harness from A/C electronic blend door actuator.
  1. Disconnect the white vacuum hose from the heater and A/C air inlet duct door vacuum control motor (18A318).
  1. Remove nuts from the studs along the lower flange of the heater air plenum chamber (18471).
  1. Disconnect connectors to A/C electronic blend door actuator and electronic module on side of heater air plenum chamber.
  1. Remove heater air plenum chamber by pulling rearward.


Heater Air Plenum Chamber and Air Inlet Duct

8b51d06.gif



Item Part Number Description 1 19C836 Suction Accumulator/Drier 2 56956-S2 Screw (2 Req'd) 3 386877-S36 Screw 4 45445-S36 Nut and Washer Assy 5 19C928 A/C Recirculating Air Duct Screen 6 386877-S36M Screw (2 Req'd) 7 45332-S12 Nut and Washer 8 19B762 A/C Air Inlet Door Inner Seal 9 19C590 A/C Recirculating Air Duct 10 18471 Heater Air Plenum Chamber 11 18C433 Heater Outlet Floor Duct 12 55734-S2 Nut 13 19A559 A/C Evaporator Core Housing 14 45332-S2 Nut and Washer A — Tighten to 2.5-3.2 Nm (23-28 Lb-In)
Installation
  1. Route the vacuum supply hose through the dash panel and seat the grommet in the opening.
  1. Position the heater air plenum chamber under the instrument panel with the A/C register duct opening up and the heater core tubes down. Connect wire harness connector to A/C electronic blend door actuator and electronic module on side of heater air plenum chamber .
  1. Rotate the heater air plenum chamber up behind the instrument panel and position the heater air plenum chamber to the dash panel. Insert the heater core tubes and mounting studs through their respective holes in the dash panel and the A/C evaporator core housing.
  1. Install three nuts on the studs along the lower flange and one on the upper flange of the heater air plenum chamber.
  1. Install three nuts below the windshield wiper motor (17508) to retain the LH end of the heater air plenum chamber to the dash panel.
  1. Install one nut to retain the upper LH corner of the A/C evaporator core housing to the dash panel .
  1. Connect the white vacuum hose to the heater and A/C air inlet duct door vacuum control motor.
  1. Connect the vacuum jumper harness to the plenum harness at the multiple vacuum connector near the heater outlet floor duct. Install heater outlet floor duct.
  1. Connect the sensor tube to the evaporator case connector on EATC-equipped vehicles.
  1. Connect vacuum supply hose to vacuum supply.
  1. Unplug the heater core tubes and connect the heater water hoses to the heater core tubes.
  1. Fill the cooling system with coolant to replace coolant lost during removal of the heater air plenum chamber.
  1. Install heater outlet floor duct as described.
  1. Install instrument panel. Refer to Section 01-12 .


Section 12-03A: Air Conditioning System—Manual A/C-Heater 1998 Crown Victoria, Grand Marquis Workshop Manual
REMOVAL AND INSTALLATION Heater Core Removal
NOTE: If a heater core leak is suspected, the heater core must be pressure leak tested before it is removed from the vehicle. Refer to Section 12-00 .

  1. Remove the heater air plenum chamber (18471) assembly as described.
  1. Remove the heater dash gasket (18570) from the heater air plenum assembly.
  1. Remove the four retaining screws from the heater core cover (18B300) and remove the heater core cover from the heater air plenum chamber assembly.


Dec 15, 2009 | Mercury Marquis Cars & Trucks

1 Answer

Help with heater core replacement - what is the easiest way to replace this?


  1. Disconnect the negative battery cable.
  2. Remove the air cleaner and duct assembly.
  3. Drain and recycle the engine coolant.
  4. Disconnect the wiper linkage from the wiper motor.
  5. Detach both heater hoses at the heater core.
  6. Remove the lower center console.
  7. Remove both instrument panel insulators.
  8. Remove the heater outlet module screws, and the heater cover.
  9. Remove the heater core mounting clip screw, and the heater core line clamp screw.
  10. Carefully pull the heater core from the case.
  11. If necessary, remove the foam seals on the heater core module for transfer to the replacement core.
  12. If necessary, remove the heater core line clamp for transfer to the replacement core.
29c879c.gif
You must disconnect the wiper linkage to allow clearance for removing the heater core coolant hoses

89b098e.gif
View of the HVAC module—1 is the A/C module, two is the front blower motor (interior mount style)

30224c8.gif
View of the heater core cover and related components

26cab80.gif
Exploded view of the heater core case assembly

f5847b9.gif
Schematic of the HVAC Module air flow controls and air path diverter doors

To install:
  1. Installation is the reversal of the removal process. Tighten the mounting screws to 27 inch lbs. (3 Nm).

Sorry but this is the only way to replace it.

Dec 07, 2009 | 1992 Chevrolet Lumina APV

1 Answer

Replace heater core in 1994 pontiac grand am


Removal & Installation


  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Raise and safely support the front of the vehicle.
  4. If necessary, remove the rear lateral transaxle strut mount.
  5. Detach the drain tube, then disconnect the heater hoses from the core tubes.
  6. Carefully lower the vehicle.
  7. Remove the console if equipped.
  8. Unfasten and remove the sound insulators, console extensions and/or steering column filler, as required.
2a4e97b.gif
Unfasten the sound insulator retaining bolts ...

7ed3765.gif
... then remove the sound insulator

  1. On some models it may be necessary to remove the steering column opening filler.
  2. Remove the floor or console outlet ductwork and hoses.
  3. Remove the heater core access cover.
a5f8d39.gif

Remove the heater core access cover

Unfasten the heater core mounting clamps/bolts, then extract the heater core from the vehicle.

a5c4734.gif
Unfasten the heater core retaining bolts; most later models are secured with clamps.

b2756d9.gif
Remove the heater core from the vehicle

To install:
  1. Install the heater core, then secure using the clamps/bolts.
  2. Fasten the heater core cover.
  3. Connect the outlet hoses and ducts.
  4. Install the sound insulators, console extensions and/or steering column filler.
  5. Raise and safely support the vehicle.
  6. Install the drain tube and connect the heater hoses to the core tubes.
  7. If removed, install the rear lateral transaxle strut mount, if removed.
  8. Carefully lower the vehicle.
  9. Connect the negative battery cable.
  10. Fill cooling system and check for leaks. Start the engine and allow to come to normal operating temperature. Recheck for leaks and check coolant level. Add if necessary.

Nov 13, 2009 | 1994 Pontiac Grand Am

1 Answer

Liking flude out of heater core how to fix free instructions


actually, the only way to fix this delicate piece of machinery is to replace the whole heater core unit. its the safe and best way. here are some step by step instructions on how to remove the old one. i also included instructions for installation of the new core as well. a fix ya rating would be most appreciated.


Remove the Old Core Step1 Drain the cars engine coolant from the water pump (remove the surge tank cap and drain bolt). Disconnect the heater outlet and inlet hoses by removing the clamps. Step2 Disconnect the Body Control Module. With the battery disconnected, parking brake on and transmission in Neutral, detach the entire front console, pull back the carpet to the right of the left dashboard support bracket and remove all the BCM's connectors and retainers. Step3 Pull back the carpet below the left dashboard support bracket. Remove the gas pedal from the front of the dash, then remove the center floor outlet ducts. Disconnect the main center floor duct from the heater/air conditioner module. Step4 Remove the heater core cover, from the HVAC module, sliding it away from the module locating pins and rearwards until the drain tube clears the dash front. Remove the heater core from the cover. Install the New Core Step1 Install the new heater core and reconnect the core cover. Use a new drain tube seal on the drain tube. Spray the core seal and dashmat with soapy water to make installing easier. Step2 Reattach the center floor ducts and the gas pedal. Install the Body Control Module and the front console. Step3 Connect the outlet and inlet hoses to the heater, replace the surge tank cap, fill the cooling system and connect the negative battery cable. Step4 Operate the cars engine until it reaches normal operating temperature. Watch over the climate control operation and check for any leaks.

Mar 06, 2009 | 1997 Saturn SL

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