Question about 1997 Dodge Caravan

1 Answer

Leak in tube that feeds heater core

What would cause the coolant line that feeds the heater core to leak, apparently under the plenum. 3.0 v6?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 576 Answers

What would cause it to leak is corrosion if it is a metal line. If it is rubber, it is just age. If it is metal, I would recommend draining the coolant and replacing it with fresh as it may have become acidic and will cause you more problems in the future -- and that motor has a large metal coolant line under the plenum feeding the back of the water pump. Good luck.

Posted on Apr 26, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Steam coming through heat/cooling vents


You have one of 4 problems, #1 the drain at the bottom of the plenum is clogged (this usually drains out under the car near the fire wall on passenger side if vehicle and is useful primarily during AC use to drain condensed water) #2 your heater core is leaking and requires replacement. #3, the outside air intake venting is not draining properly and allowing rain water and condensation to enter through the intake and into the plenum. #4 in rare cases coolant is leaking past the heater hose clamps at the heater core and allowing coolant to enter the plenum.

Jan 02, 2014 | 1998 Dodge Neon

1 Answer

How do you bypass the heater core on a 1998 Ford Bronco 2?


Disconnect both hoses from the core and one of them also from the engine. Hook the other one back to where you took one off, making a loop. The picture below is not a bronco, but gives you the idea.
By the way, your core is easy to replace. It almost pops right out from under the dash. I ahve included picture below.

jturcotte_136.gif

jturcotte_137.gif

jturcotte_138.gif


Remove and replace heater core procedures:

  1. Disconnect the heater hoses from the heater core tubes and plug hoses.
  2. In the passenger compartment, remove the five screws attaching the heater core access cover to the plenum assembly and remove the access cover.
  3. Pull the heater core rearward and down, removing it from the plenum assembly.

To install:

  1. Position the heater core and seal in the plenum assembly.
  2. Install the heater core access cover to the plenum assembly and secure with five screws.
  3. Install the heater hoses to the heater core tubes at the dash panel in the engine compartment. Do not over-tighten hose clamps.
  4. Check the coolant level and add coolant as required. Connect the negative battery cable.
  5. Start the engine and check the system for coolant leaks.

Nov 09, 2010 | 1988 Ford Bronco

1 Answer

Diagram on how to replace heater core in 99 expedition


Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.
  1. Drain engine coolant.
  2. Remove instrument panel.
  3. For 5.4L (4V), if quipped, remove junction splash shield.
  4. For 5.4L (4V), if quipped, disconnect starter relay cable. ford-03-00-3579.gif

  5. For 5.4L (4V), if quipped, remove junction block bracket.
  6. Clamp inlet and outlet heater hoses.
  7. Disconnect heater hose from heater core by gently pressing it toward heater core.
  8. Remove A/C plenum demister adapter.
  9. Disconnect vacuum line.
  10. Remove 13 plenum chamber top screws.
  11. Remove blend door assembly from case.
  12. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.
ford-10-00-3098.gif

  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
prev.gif next.gif

Aug 21, 2010 | Ford Expedition Cars & Trucks

2 Answers

Smoke coming from a/c vents on ford expedition with sweet smell


The problem is the heater core leaking behind the dashboard. Heater Core Removal & Installation 1997-2002 To Remove:
NOTE: Heater core must be vacuum leak tested before it is remove from vehicle if a heater core leak is suspected.
  1. Drain engine coolant.
  2. Remove instrument panel.
  3. For 5.4L (4V), if quipped, remove junction splash shield.
  4. For 5.4L (4V), if quipped, disconnect starter relay cable. ford-03-00-3579.gif

  5. For 5.4L (4V), if quipped, remove junction block bracket.
  6. Clamp inlet and outlet heater hoses.
  7. Disconnect heater hose from heater core by gently pressing it toward heater core.
  8. Remove A/C plenum demister adapter.
  9. Disconnect vacuum line.
  10. Remove 13 plenum chamber top screws.
  11. Remove blend door assembly from case.
  12. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.
ford-10-00-3098.gif

  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
prev.gif next.gif

Aug 17, 2010 | 1999 Ford Expedition

1 Answer

How do you remove the heater core from a 1997 ford f-150


Heater Core Removal & Installation To Remove:
NOTE: If a heater core leak is suspected, the heater core must be leak-tested before it is removed from the vehicle.
  1. Remove or disconnect the following:
    • The negative battery terminal
    • Engine coolant
    • The instrument panel Heater Hoses for_f150_conn_tabs_htr_hses.gif

    • The heater water hoses at the heater core
      1. Compress the holding tabs
      Remove the A/C plenum demister adapter for_f150_dmstr_adptr_rem.gif

    • The screw
    • The A/C plenum demister adapter Disconnect the vacuum line. for_f150_vac_line_rem.gif

    • Vacuum line Remove the heater core bracket. for_f150_htr_core_brckt_rem.gif

    • The screws
    • The bracket Remove the plenum assembly top for_f150_plnm_case_top.gif

    • The 13 screws
    • The plenum chamber top Blend door assembly for_f150_blnd_door_assmbly.gif

    • The blend door assembly from the case
    • The heater core
To Install:
NOTE: Lubricate the coolant hoses with MERPOL(R) meeting Ford specification ESE-M99B144-B or plain water only, if needed.
  1. Install or connect the following:
    • The heater core
    • The blend door assembly into the case Blend door assembly for_f150_blnd_door_assmbly.gif

    • The plenum chamber top
    • The 13 screws
    • The bracket
    • The screws
    • Vacuum line
    • The A/C plenum demister adapter
    • The screw
    • The heater water hoses at the heater
    • Engine coolant
    • The negative battery terminal
prev.gif next.gif

Jun 20, 2010 | Cars & Trucks

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

Change heater core in 1999 madza truck? need to know how?


INSTRUCTIONS TO REPLACE HEATER CORE:
(1)Disarm the airbag system;
(2)allow the cooling system to completely cool down;
(3)using a thick cloth for protection, turn the radiator filler cap to the first stop;
(4)step back and let the pressure release;
(5)once the pressure has been released, completely drain the cooling system;
(6) working within the engine compartment, loosen the ****,ps on the heater hoses at the engine compartment side of the firewall, twist the hoses and carefully sepseparate them from the heater core tubes;
(7)plug or cap the heater core tubes to prevent coolant from spilling into the passenger compartment when the heater core is removed;
(8)place a plastic sheet on the floor of the vehicle to prevent stains if the coolant spills;
(9)remove the instrument panel;
(10)remove the PCM heat sink and ground strap;
(11)remove the heater plenum chamber;
(12)separate the heater core from the heater plenum chamber; (13)installation is the reverse of the removal with the following additions; (a)fill the cooling system; (b)run the engine, check for leaks and test the heater.

Nov 13, 2009 | 1999 Mazda Pickup

1 Answer

I need to replace my heater core on my 1995 Ford Ranger


Removal & Installation
4274678.gif
Exploded view of the blower motor housing and the heater air plenum assemblies

  1. Disconnect the negative battery cable. Allow the engine to cool down. Drain the cooling system to a level below the heater core fittings on the firewall.
  2. Disconnect the heater hoses from the heater core tubes and plug hoses.
  3. Remove the five nuts that secure the blower motor housing to the firewall.
  4. Pull the housing away from the firewall. Disconnect any wire harness plugs which inhibit the housing.
  5. Remove the remaining nuts which secure the heater air plenum (inside the passenger compartment) to the firewall.
  6. In the passenger compartment, remove the instrument panel. Refer to Section 10.
  7. Pull the heater air plenum rearward from the firewall and remove it from the vehicle.
  8. Remove the heater core from the heater air plenum.
  9. Inspect all air seals on the components and firewall and replace any that are damaged.

  1. To install:
  2. Install the heater core into the air plenum chamber.
  3. Position the heater air plenum against the firewall from the passenger compartment.
  4. Under the hood, install the plenum retaining nuts.
  5. Install the blower motor housing to the firewall and install the attaching nuts.
  6. Connect the heater hoses to the heater core tubes at the dash panel in the engine compartment. Do not over-tighten the hose clamps.
  7. Install the instrument panel.
  8. Check the coolant level and add coolant as required. Connect the negative battery cable.
  9. Start the engine and check the system for coolant leaks.

Oct 18, 2009 | 1995 Ford Ranger Supercab

1 Answer

Coolant fluid leaking below carberator 1989 dodge daytona


May not apply to yours, but I have seen coolant lines routed under intake (actually through plenum below carb)...the idea is to pre-heat and vaporize fuel to prevent "puddling" under carb. If you look at most v8 engines, exhaust is routed the same way, to do the same job. You may need to use a mirror to see under there to determine exactly what's going thats causing leak.

Apr 05, 2009 | 1989 Dodge Daytona

1 Answer

How do I change the heater core in my 1984 grand marquis? I dont have a manual


you have to remove the plenum case behind the dash. I will provide 94 gr marquis. don't have 84.



---------------------------------------------------------------------------------------
Section 12-03A: Air Conditioning System—Manual A/C-Heater 1994 Crown Victoria/Grand Marquis. Workshop Manual
REMOVAL AND INSTALLATION Heater Core Removal
  1. Remove the heater air plenum chamber assembly as outlined.
  2. Heater Air Plenum Chamber Removal
    1. Disconnect battery ground cable .
    1. Disconnect the heater water hoses 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 during heater air plenum chamber removal.
    1. Remove three nuts located below the windshield wiper motor (17508) retaining the LH end of the heater air plenum chamber to the dash panel .
    1. Remove one nut retaining the upper LH corner of the A/C evaporator core housing to the dash panel .
    1. Remove LH and RH lower instrument panel insulators.
    1. Disconnect two vacuum supply hoses from vacuum source. Push grommet and vacuum supply hose into passenger compartment.
    1. Remove all instrument panel retaining screws and pull the instrument panel back as far as possible without disconnecting any wire harnesses.
    1. Loosen the RH door sill plate and remove the RH side cowl trim panel.
    1. Remove cross body brace and disconnect wiring harness from A/C electronic door actuator motor (19E616) and disconnect the sensor tube from the evaporator case connector.
    1. Disconnect the vacuum jumper harness at the multiple vacuum connector near the heater outlet floor duct.
    1. Disconnect the white vacuum hose from the heater and A/C air inlet duct door vacuum control motor.
    1. Remove two hush panels.
    1. Remove one plastic push fastener retaining the heater outlet floor duct to the LH end of the heater air plenum chamber . Remove LH screw and loosen RH screw on the rear face of the heater air plenum chamber and remove the heater outlet floor duct .
    1. Remove two nuts from the two studs along the lower flange of the heater air plenum chamber .
    1. Carefully move heater air plenum chamber rearward to allow heater core tubes and the stud at the top of the heater air plenum chamber to clear holes in the dash panel. Remove heater air plenum chamber from vehicle by rotating the top of the heater air plenum chamber forward, down and out from under the instrument panel . Carefully pull lower edge of instrument panel rearward as necessary while rolling the heater air plenum chamber from behind the instrument panel .
fcb7eaf.gif
  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.

    Heater Core Removal


    bd523c4.gif


    Item Part Number Description 1 390092-S2 Screw (2 Req'd) 2 18658 Heater Core Case Seal 3 18476 Heater Core 4 18570 Heater Dash Gasket 5 18471 Heater Air Plenum Chamber 6 18B300 Heater Core Cover
  1. Pull the heater core assembly from the heater air plenum chamber assembly.
Installation
  1. Carefully install heater air plenum chamber assembly into the heater air plenum chamber assembly. Visually check to ensure that core seal is properly positioned.
  1. Position the heater core cover and install the four retaining screws.
  1. Install the heater air plenum chamber assembly as outlined.

Feb 27, 2009 | 1984 Mercury Grand Marquis

Not finding what you are looking for?
1997 Dodge Caravan Logo

127 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dodge Experts

yadayada
yadayada

Level 3 Expert

76848 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Dodge Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...