Chrysler Cirrus heater not working

Discussion in 'Cirrus' started by elloco1, Sep 20, 2005.

  1. elloco1

    elloco1 Guest

    I have a 1996 Chrysler Cirrus with a 2.4 engine and the heater does not
    work. Once the engine has reached it's normal operating temperature and I
    attempt to use the heater, there is an initial hot/warm air coming thru in
    any selected position (floor, floor/vent, vent, etc) but it will gradually
    turn into cool/cold air within 10 seconds or so. The A/C works properly in
    the car and it is true cold air. Also I want to mention that the defroster
    light does not light up but the defroster works.

    It is getting cold in the mornings where I live and I need to find a
    solution to this problem.

    Thanks in advance for the help.
     
    elloco1, Sep 20, 2005
    #1
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  2. elloco1

    Walter Guest

    Perhaps you have a bad thermostat ... there is heat as long as the car
    is idling or moving slowly but the engine cools off when moving at
    regular speeds so you have no heat. If that's not the case, perhaps you
    have a bad or clogged heater core.
     
    Walter, Sep 21, 2005
    #2
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  3. Usually caused by restricted flow in the heater core. If yours has a water
    valve that might not be opening all the way, or just built up crud in the
    heater
    core, you should try disconnecting the heater hoses from the engine block
    (when the car is cold) and flushing the core with a garden hose, both
    directions.

    Sometimes this happens when people flush their cooling systems espically
    with the chemical flushes which are great for removing scale and such and
    sending it into the small passages in the heater core (and radiator) If you
    ever do a chemical flush after you do the purge/deactivation cycle you need
    to backflush the rad and heater core separately.

    Ted
     
    Ted Mittelstaedt, Sep 21, 2005
    #3
  4. elloco1

    elloco1 Guest

    I have a 1996 Chrysler Cirrus with a 2.4 engine and the heater does not
    work. Once the engine has reached it's normal operating temperature and I
    attempt to use the heater, there is an initial hot/warm air coming thru in
    any selected position (floor, floor/vent, vent, etc) but it will gradually
    turn into cool/cold air within 10 seconds or so. The A/C works properly in
    the car and it is true cold air. Also I want to mention that the defroster
    light does not light up but the defroster works.

    It is getting cold in the mornings where I live and I need to find a
    solution to this problem.

    Thanks in advance for the help.
    -----------------------------------------------



    The thermostat is new and the temperature is normal. I will also check the
    temperature while the car is idling to see if there is a difference. I
    think that the problem could be in the heater core as it was mentioned. I
    will definitely flush the system and hope that it cures the problem.

    I know some cars have bleeding valves for the cooling system (Nissans, BMW,
    etc) but I did not see anything like that in the car nor the manual.

    Thanks for your suggestions.
     
    elloco1, Sep 21, 2005
    #4
  5. elloco1

    Bob Shuman Guest

    Based on what you say, I'd look for an obstruction in either the hot water
    flow to/through the heater core OR a problem with the air flow over the
    heater core and into the vehicle. I am not familiar with this car, but have
    fixed a couple of other Chrysler Minivans that had problems with the vacuum
    controlled valve in the heater line near the firewall and the interior
    "blend" door that changes alignment based on the control settings for either
    heat or A/C.

    Good luck.

    Bob
     
    Bob Shuman, Sep 22, 2005
    #5
  6. elloco1

    elloco1 Guest

    Thanks for all the suggestions provided and I'm happy to say that the
    problem is fixed. The heater core was clogged. I first tried the regular
    flow flush with a water hose and very little water came out of the other
    end, then I decided to do a reverse flow and everything cleared. I have
    replaced heater cores on BMWs before and those are nothing compared to all
    the things that needed removal just to get to the heater core on this car.

    Again, thanks for all the input.


    I have a 1996 Chrysler Cirrus with a 2.4 engine and the heater does not
    work. Once the engine has reached it's normal operating temperature and I
    attempt to use the heater, there is an initial hot/warm air coming thru in
    any selected position (floor, floor/vent, vent, etc) but it will gradually
    turn into cool/cold air within 10 seconds or so. The A/C works properly in
    the car and it is true cold air. Also I want to mention that the defroster
    light does not light up but the defroster works.

    It is getting cold in the mornings where I live and I need to find a
    solution to this problem.

    Thanks in advance for the help.
     
    elloco1, Sep 23, 2005
    #6
  7. That's silly, why did you do that? I told you to disconnect the heater
    hoses
    at the block and do the flush through them. You don't need to disassemble
    everything to get to the heater core to flush it. You only need to do that
    if your removing and replacing the core.

    Ted
     
    Ted Mittelstaedt, Sep 25, 2005
    #7
  8. elloco1

    elloco1 Guest

    I have a 1996 Chrysler Cirrus with a 2.4 engine and the heater does not
    work. Once the engine has reached it's normal operating temperature and I
    attempt to use the heater, there is an initial hot/warm air coming thru in
    any selected position (floor, floor/vent, vent, etc) but it will gradually
    turn into cool/cold air within 10 seconds or so. The A/C works properly in
    the car and it is true cold air. Also I want to mention that the defroster
    light does not light up but the defroster works.

    It is getting cold in the mornings where I live and I need to find a
    solution to this problem.

    Thanks in advance for the help.

    ---------------

    Ok, let me clarify that statement. I did not remove anything but looked
    thru the radio hole and read the manual for a worst case scenario just in
    case it needed removal. Thanks God it did not need removal because it would
    had been time consuming and your suggestion saved me a lot of time and
    pain!!! ;-)

    Thanks for the help
     
    elloco1, Sep 28, 2005
    #8
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