Question about 1996 Saturn SC

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I want to disconnect the heater which is leaking in dash. I don't need the use of the heater but need help with the easiest way to plug/cap the lines. 96 Saturn SL1

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Disconnect both heater hoses going into the firer wall (heater core) you can go to auto parts and get a double end hose connector and two hose clamps, connect both hoses together and clamp then, that call by-passing heater core, easy to do.Good luck

Posted on Feb 05, 2010

  • Alexander Mimun
    Alexander Mimun Feb 05, 2010

    P.S. You dont need to plug heater core after by-passing heater.


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After warming up vehicle temp gauge says normal but no heat.

The temp control lever or dial has a loose or disconnected vacuum line or control wire at the dash control or at the heater core valve under the right side dash or on opposite firewall in engine compartment.
listen for vacuum leak in dash. if you don;t hear it then you have to look for it follow line and also make sure the vacuum regulator is ok. You can check this by sucking and blowing on the line tube. You will know if its working when you do.

Also the control valve at the heater core can get stuck may need to lube it and manually free it up.
Hope this helps Mike

Jan 19, 2016 | 2002 Ford Escape

1 Answer

Running hot

The easiest test if a pressure test of the radiator cap - if you don' t have a tester - when it is cool remove the cap and see if it is has a defective seal or other sign it is leaking - corroson/ antifreeze. It that looks ok get a pressure tester and test the system pressure only to the setting on the cap or by spec on your car. If it wont hold pressue look for leaks while pressurized including around your water pump. It that all checks out - you may have a lot of bugs in your A/C coils and radiator. A good check here is to get it up to the 200 deg and turn on the heater full hot - if the temp drops it is a good indicator of a plugged radiator or the need to flush your radiator if not buggy..

Jul 25, 2012 | 1999 Pontiac Grand Am GT

1 Answer

I have water leaking driver side floorboards and partially on the passenger side floorboards. Where is the a/c drain plug and what is the easiest way to get to the drain plug? Do you have any images that...

make sure it isnt coolant, if it is, it may be your heater core leaking. You maybe right about the a/c drain tube, it may not be correctly placed in the hole in the floor for proper draining, have car raised and look under car tube peeking out floor, it may also not be hooked together in the dash either

Oct 21, 2010 | 2001 Dodge Stratus

1 Answer

I need instructions on how to remove a heater core from my 1967 Cutlass Supreme with A/C. After looking under the dash, the heater and A/C control cables are attached to what must be the enclosure box....

Hello! Disconnect the negative battery terminal...Drain the radiator and disconnect the heater inlet and outlet hoses at the dash...Remove the blower inlet to firewall screws...Remove the blower inlet, motor and wheel as an assembly...Disconnect the control wires from the defroster door...
Disconnect the vacuum hose diverter door actuator diaphragm...Disconnect the control cable from the temperature door lever...Remove the four nuts securing the heater assembly to the dash...Remove the screw securing the defroster outlet tab to the heater assembly...Remove the heater from the car...

To install...Make sure the heater assembly seal is in good condition...Position the assembly onto the dash and tighten the retaining screws...Reconnect the heater hoses, electrical connectors and negative battery cable; Refill the engine with coolant, start the vehicle and check for leaks...


Jul 01, 2010 | Oldsmobile Cutlass Supreme Cars & Trucks

2 Answers

Whats the easiest way to R&R a Heater core on a 1997 Kia Sportage? Have coolant leaking into passenger floor pan.

The EASY way, thought not necessarily pretty, but it works... get a rotary cutting tool (ie Dremel) and cut the rectangular cover for the heater core under the dash... one the two heater lines are disconnected, the core should slide right out.... put the new core in, then glue the cut away plastic with RTV silicone seal, re-attach the two hoses, and you're good to go.... otherwise, its a nightmare of pulling out nearly the entire dash, disconnecting the A/C lines, etc. not something I'd want to undertake... so this EASY solution will get the job done, without costing you an arm and a leg at the mechanic.

Mar 16, 2010 | 1997 Kia Sportage

1 Answer

Whats the easiest way to get to the heater core with out ripping out the whole dash? I'm sure that's where the anti-freeze is leaking from. Cant tell if it is for sure cause the carpet doesn't seem wet...

Sorry, but the only way to get to the heater core is to pull the dash. You could connect the two heater hoses together and temporairily bypass the heater core, but that means no heat.

Dec 22, 2009 | 1995 Pontiac Grand Am

1 Answer

Need to replace the heater core on my daughter's 99 intrepid. Need procedure advice, I've heard that is a 15hr. job for the novice, can you facilitate by providing descriptive 'how to'

  1. Disconnect battery. This must be done to prevent accidental air bag deployment.
  2. Using an A/C recovery unit, remove all R-134a refrigerant from the A/C system.
  3. Remove air cleaner hose and air distribution duct from the engine.
  4. Drain the engine cooling system.
  5. Disconnect heater hoses at the dash panel. Plug the heater core inlet and outlet tubes to prevent anti-freeze from spilling on the vehicle interior during removal. If an appropriate plug cannot be found pull back carpet and use caution when removing unit. Keep the heater tubes elevated to prevent spillage of coolant.
  6. Remove both A/C lines from expansion valve. Use special tool 7193 to disconnect quick connectors on A/C lines. Refer to A/C line removal in this section for complete procedure. After removing lines cap the expansion valve openings and the A/C hose openings. This will prevent any dirt or moisture from entering the refrigerant system during servicingCAUTION: The lubricant used in this air conditioning system absorbs moisture readily (similar to brake fluid) Do not leave any portion of the system open for extended periods of time.
  7. Remove the three retaining nuts from the studs. These studs project through the dash panel into the engine compartment.
  8. Remove right and left instrument panel end caps. These caps are held in place by a series of clips.
  9. Remove right and left interior door post kick panel.
  10. Remove right side bezel from instrument panel

Nov 10, 2009 | 1999 Dodge Intrepid

1 Answer

Blown heater core in a 1977 ford f-150 pick-up

1976-79 Without Air Conditioning
  1. Disconnect the temperature and function control Bowden cables from the heater housing. This must be done to prevent damage to the cables.
  2. Disconnect the wires from the blower resistor.
  3. Remove five screws attaching the air inlet (vent) duct to the heater housing.
  4. Disconnect the blower wires.
  5. Drain the radiator and remove the heater hoses from the heater core.
  6. Remove three heater stud retaining nuts and remove heater.
  7. Remove gasket between the heater hose ends and the dash panel at core tubes.
  8. Remove heater core cover and gasket (four screws).
  9. Pull heater core and lower support from heater.

To install:
  1. Install foam gaskets on heater core and install in heater assembly.
  2. Install the core seal and cover plate.
  3. Position heater assembly in vehicle and install three stud retaining nuts.
  4. Connect heater hoses to heater core and fill radiator.
  5. Connect blower motor wires.
  6. Place defroster nozzle on heater so that the defroster and heater openings are in the up position, and there is no air leak around the seal.
  7. Install air inlet (vent) duct to heater. Push duct firmly against seal on side cowl and tighten five attaching screws.
  8. Connect wires to blower motor resistor.
  9. Connect temperature and function control cables to heater, and adjust the cables.
  10. Reinstall gasket between the heater hose ends and the dash panel at core ends.
  11. Fill Cooling System.

  12. Hope this helps you! Please remember to rate my solution.


Apr 09, 2009 | 1986 Ford F150 SuperCab

1 Answer

How do i remove the heater core in a 1988 F250 pickup

I don't have that old of a shop manual but you usually have to open up the heater plenum case under the dash to acess the heater core. The disconnect fr the heater hoses is under the hood at the fire wall near the passenger side.

1996 version

Heater Core Removal
  1. Allow the engine to cool. Observe the safety precautions in Section 03-03 .
  1. Place a thick cloth over the radiator cap. Turn the cap slowly to its first stop to release system pressure. When the pressure has been released, tighten the radiator cap.
  1. Disconnect the heater water hoses (18472) from the heater core (18476). Plug the hoses.
  1. Remove the glove compartment.
  1. From inside the passenger compartment, remove the seven screws that attach the heater core cover (18B300) to the heater air plenum chamber (18471).
  1. Disconnect the vacuum source. Leave the A/C plenum vacuum harness (18C581) attached to the heater core cover. Remove the heater core cover.
  1. Remove the heater core from the heater air plenum chamber.
good luck

Jan 08, 2009 | 1988 Ford F 250

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