Question about 1995 Pontiac Grand Am

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Cant find heater core hose

I am losing all my coolant. it is falling onto the ground right behind the oil pan. i think its a broken heater core hose but i'm not sure.

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  • mike loshbough
    mike loshbough May 11, 2010

    between the transmissions and oil pan or back side of oil pan i have a solution but need to know!!

  • Anonymous Mar 19, 2014

    Losing antifreeze and don't know where it's going



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The heater core hoses go into the firewall area on the passenger side of the engine compartment,But I think you should look for the leak by adding water and with the engine running,watch to see if you can locate the leak,the location you are describing sounds more like a freeze plug or even the head gasket,But look and see first.

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Posted on Feb 01, 2009

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They are two hoses that go from motor water pump, they are 3/4 size or a little more, they go in to body fire wall, you can disconnect both and join them by pass with pipe and two clamps You will recognize them easy, they are smaller than radiator hoses

Posted on Feb 01, 2009


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1 Answer

What is causing it to leak?

If not radiator hoses, what about heater hoses to and from heater core?
You might also have throttle body heater hoses to and from throttle body.
My biggest problem is I can't see anything from here.

Nov 27, 2015 | 2000 Pontiac Montana

1 Answer

Broken heater core

A heater core is nothing more than a small radiator with coolant passing through it. Like a radiator, heat in the coolant is dispersed to the surrounding air -inside the heater case. If it isn't leaking coolant, you will only have to fix it when you can't stand being without a heater. Would it help not using it? Only if using it causes it to leak.
What exactly is broken? If it is losing coolant, a temporary remedy is to splice the two heater hoses together. You can pull them off at the firewall, the inlet and outlet hoses, buy a plastic coupling piece that fits snugly into the hoses, and clamp them tight with hose clamps. You will have no heater, but you won't have a core that is leaking coolant into the heater case.
If the heater core is good, your problem might be the various doors in the case not being opened properly. The vacuum controlled actuators for the doors needs checked.

Jan 31, 2014 | 1996 Honda Accord

1 Answer

How do you chage heater core on 1998 buick park ave

  • Lift the hood and prop it open. Makes sure the engine is cold. Disconnect the negative battery cable with a socket wrench or box wrench. Avoid using open-end wrenches on the battery terminals, as they tend to strip the bolt heads.
  • 2Place a drain pan under the radiator. Open the radiator cap. Open the radiator drain on the bottom of the radiator and the two coolant drains near the oil pan. You can reuse the coolant unless it appears cloudy and contaminated. Close all three drain openings once all the coolant has drained from the system.
  • 3Disconnect the inlet and outlet hoses of the heater core inside the engine compartment using a socket wrench. Be prepared to catch or wipe up any coolant that drips from these hoses. Drain the coolant from inside the heater core.
  • 4Unscrew and remove the lower instrument panel sound insulator from below the dashboard on the passenger side. Use a socket or screwdriver to loosen and remove the screws on the heater floor outlet. Remove the clips and take out the duct.
  • 5Loosen and remove the screws holding the heater core cover in place. Remove the cover.
  • 6Remove the retaining bolts holding the heater core in place. Remove the heater core.

  • Read more: How to Replace a 1998 Buick Century Heater Core '

    Sep 27, 2011 | 1998 Buick Park Avenue

    1 Answer

    I have a 1990 chevy beretta with a 3.1 and im having trouble with it losing coolant and overheating it dosent seem to be any gaskets but i cant tell where the leak is coming from i do know that the coolant...

    there are some coolant heater hoses right above the exhaust manifolds check those, also check engine oil for discoloration due to coolant contamination. may have moisture on dipstick, oil may look like a chocolate shake texture. if so then most likely internal intake gasket leakage.the best way to check for hose leakage is to pressure test the coolant system if possible.

    Sep 06, 2011 | Chevrolet Beretta Cars & Trucks

    2 Answers

    Where is the heater core located? Will I have to remove the entire dash to get to it?

    Pass side behind glovebox, and No just glovebox area has to come apart.

    Mar 08, 2011 | 2003 Chevrolet S-10

    1 Answer

    How to change heater core

    Check this procedure for models without A/C...

    1984 AND LATER
    1. Disconnect the negative battery cable, heater blower resistor wires and blower wires. Disconnect the heater core ground strap at the dash panel.
    2. Drain the cooling system and then disconnect both heater hoses at the heater.
    3. Remove the seven screws attaching the heater/blower case to the plenum and remove the heater/blower base.
    4. Remove the four screws from the heater core shroud, and then remove the shroud and core assembly.
    5. Separate the core from the shroud by removing the three screws and core mounting clamps and then separating the two.
    To install:
    1. Using sealer as necessary to prevent leaks at all joints and flanges.
    2. Position the assembly onto the dash and tighten the retaining screws.
    3. Reconnect the heater hoses, electrical connectors and negative battery cable. Refill the engine with coolant, start the vehicle and check for coolant leaks.

    And this procedure for all Buick models with A/C...
    1977 AND LATER

    1. Disconnect the negative battery cable and drain the cooling system.
    2. Disconnect the heater hoses.
    3. Remove the retaining bracket and the ground strap. Disconnect the module rubber seal and module screen.
    4. Remove the right windshield wiper arm.
    5. Remove the diaphragm connections, the hi/blower relay, the thermal switch mounting screws, and all the electrical connections from the module top.
    6. Remove the module top cover and remove the core.
    To install:
    1. Apply a strip of caulk-type sealer when installing the module top.
    2. Install the core and module top cover.
    3. Install the diaphragm connections, the hi/blower relay, the thermal switch mounting screws, and all the electrical connections to the module top.
    4. Install the right windshield wiper arm.
    5. Install the retaining bracket and the ground strap. Connect the module rubber seal and module screen.
    6. Connect the heater hoses.
    7. Connect the negative battery cable and refill the cooling system.
    8. Start the engine and check for coolant and vacuum leaks.

    Hope helps (remember rated this).

    Jul 16, 2010 | 1989 Buick Park Avenue

    3 Answers

    Coolant leak cant find it . it only leaks when heats up and it has a heavy drip coming out where the transmission meets the oil pan undernearth

    That would be your heater box overflow making that drip on the transmission, which indicates that you have a leak in your heater core. Try disconnecting the hoses to your firewall which connect to your heater core and either blocking them or joining them together to see if the leak stops. If it does, you can leave them that way until you can get to your heater core and replace it.

    Mar 14, 2010 | 1994 Ford F150 Styleside Supercab

    3 Answers

    I have a 2000 Jeep Cherokee and the heater does not heat

    Check to see if the temp door is changing to heat,If that is fine,Then make sure the thermostat is good,maybe just replace it,and refill the radiator,and reservoir with coolant.The heater hoses going into the heater core need to be checked,while the engine is real hot,to make sure the heater hose going in the heater core,and out of the heater core are both to warm to hold by the naked hand.If only one of them is hot,and the other one is warm,to cold to the touch,then remove the heater hoses from the heater core,and use a water hose to flush the heater core out.Put the water hose in one side and flush the heater core out with the force of the water hose pressure.Then do the other heater core pipe the same way.Then replace the heater hoses back on the heater core,and refill the radiator.Make sure to get enough coolant back in the radiator.If there is not enough,the coolant will not flow threw the heater core and put out heat.I hope this is helpful,and you can do the work yourself.You may want to check those heater hose first thing.And change the thermostat anyway,sense you will have some coolant lose from flushing the heater core.If this helps,please let us know,thank you.

    Oct 21, 2009 | 2000 Jeep Grand Cherokee

    2 Answers

    Coolant is leaking out

    It's a heater core line. It bolts to the back of the engine and goes into the firewall to the heater core. You have a leak in that hose. Could just be a loose clamp. Don't forget to vote on helpfullness.

    Apr 24, 2009 | 1996 Ford Taurus

    2 Answers

    Pontiac Fiero Heater Core

    no its actually really easy i just did it about 3 weeks ago. right under the dash on the passenger side the is a black box unscrew the cover on the side of it and the heater core is right there then you have to  disconnect the hoses under the hood which might be the hardest part after that unbolt the straps holding the heater core on. I keep the straps on till i get the hoses off because then the heater core don't move when you are trying to get the hoses off. Then all you have to do is put it back together.

    Jun 27, 2008 | 1986 Pontiac Fiero

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