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03 cavaliar heater core - Cars & Trucks

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Okay,country boy,click here to see guide.

Posted on Nov 29, 2012


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Can hear water when running.

can be clogged heater core,try inspecting the heater core.


If its clogged it can be cleared with the use of Garden hose p[ump.The water has to be turn into the heater hose line and then water has to be removed out via the pump.


For complete step by step procedure,refer heater core flushing and other help links mentioned below.


Click the link below:-----


How to Flush Heater Core?


How to replace heater core on Chevy Astro?


Replacing heater core for grand marque?


How to replace heater core for All car models?

Click the link below:---


How to replace heater core on Buick Regal?


How to Remove Heater Core on 2008 Honda Odyssey?


Honda Heater Core Replacement?


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These will help.


Nov 28, 2012 | 2000 GMC Jimmy

2 Answers

How do you clear a clogged heater core?

Charles,when they get clogged,you must replace,need help doing that,if so then we need the year,make ,model and engine size.

Nov 27, 2012 | 1999 Ford Escort

1 Answer

Show me how to chang a heater core on 1995 thounder bird

Please click on the link below and get the complete guide to remove and install heater core on 1995 ford Thunderbird :----- ------------ This should help.Thanks.Helpmech.

Mar 13, 2011 | 1996 Ford Thunderbird LX

1 Answer

On the 1998 ford explorer heater core removal i can see the bolt or nut thats directlly behind the engine block,how do i gain access are what is the process to gain access to the bolt or nut?

SECTION 412-02: Heating/Defrosting 1998 Explorer/Mountaineer Workshop Manual REMOVAL AND INSTALLATION Heater Core Removal
  1. NOTE: If a heater core leak is suspected, the heater core must be leak tested before it is removed from the vehicle. For additional information, refer to Section 412-00 .
    Drain the radiator. For additional information, refer to Section 303-03 .
  1. Remove the heater water hoses.
    1. Squeeze the clamps and pull the hoses off.
    1. Disconnect the vacuum hose from the water control valve.
  1. Remove the instrument panel. For additional information, refer to Section 501-12 .
  1. Remove the A/C evaporator core housing. For additional information, refer to Section 412-03 .
  1. Remove the A/C evaporator core housing. For additional information, refer to Section 412-03 .
  1. Remove the powertrain control module (PCM). For additional information, refer to Section 303-14 .
  1. Remove the PCM heat sink.
    1. Remove the ground strap screw.
    1. Remove the heat sink.
  1. Remove the heater air plenum nuts from the engine side of the dash panel.

  1. Remove the heater core.
    1. Remove the heater core cover to air plenum screws.
    1. Lift off the cover.
  1. Remove the heater core (18476).
  2. snorkelbobby_34.gif

Feb 05, 2011 | Ford Expedition EL Cars & Trucks

1 Answer

We turn on the heater and its hot for the 1st minute, then its cool. What could it be?

Low coolant (not filling the heater core), or needs a heater core flush (to produce more flow into the heater core). Some possibilties for starters... Have you had the coolant flushed at all before? The fact that it is an '03 leaves for possibilities that it is due. A flush by a garage would some the problems above.

Sep 30, 2010 | 2003 Dodge Caravan

1 Answer

Heater stoped working on t5 03 model used to come

Clogged heater core, stuck closed heat valve, defective control head.
Get shop manual if your gonna attempt this repair and a good chiropractor.

Apr 06, 2010 | 1986 Volkswagen Wagon Camper

3 Answers

92 F150 heater core

Basically all you need to do is:
1. Remove Glove box
2. Disconnect several wiring harnesses while working towards the engine bay.
3. Remove plastic housing surrounding the Heater Core.
4. Make sure inlet/outlet hoses are disconnected from inside the engine bay.

That should get her to pop right out

Mar 24, 2009 | 1992 Ford F150 SuperCab

1 Answer

2003 malibu

A heater core is located behind the dash on the passenger side. If you look under the hood you will see 2 heater hoses going to the fire wall again, on the passenger side, your heater core is located behind the hoses. You will need to take the dash loose or off to get to the air box the heater core rides in.

Mar 01, 2009 | 2003 Chevrolet Malibu

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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