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  1. #1

    Join Date
    06 Oct 2019
    Location
    Mass
    Posts
    3
    Saab(s)
    03 95
    Thumbs Up:   0

    No heat

    I have a 2003 Saab 95 3.0 turbo I have replaced the radiator I have replaced the heater valve I have no codes in my heater Diagnosis car does not overheat thermostat was replaced a year ago I have Luke warm to no heat can someone answer me on this.

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  2. #2
    Saab Owner Digger's Avatar
    Join Date
    28 Oct 2016
    Location
    Minneapolis Minnesota
    Posts
    1,008
    Saab(s)
    2006 9-3 2.0t SportCombi
    Thumbs Up:   145
    When asking this question it is important to mention if your car has manual or automatic climate control. My first question is usually are both water lines to the heater core equally hot. At the firewall check to see if you have hot on the line going into the heater core and almost as warm coming out, then let us know if you have auto climate control.

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  3. #3

    Join Date
    06 Oct 2019
    Location
    Mass
    Posts
    3
    Saab(s)
    03 95
    Thumbs Up:   0
    It Is an automatic car I have dual climate control buy touch hose going into the heater core and coming out of the heater core feel the same top radiator hose and lower radiator hose feel the same as well

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  4. #4
    Saab Owner Digger's Avatar
    Join Date
    28 Oct 2016
    Location
    Minneapolis Minnesota
    Posts
    1,008
    Saab(s)
    2006 9-3 2.0t SportCombi
    Thumbs Up:   145
    With hot hoses on both sides coolant is flowing through the heater core like it should and with no codes your controller is, or at least thinks it is working as it should and you probably have a broken air control motor. For this a youtube video is worth more than a thousand words as you need to get some things out of the way and stick your head under the dash to see what's happening when you push the buttons. Usually the air blend motor, or linkage and replacing would be the first best video to watch.

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  5. #5

    Join Date
    06 Oct 2019
    Location
    Mass
    Posts
    3
    Saab(s)
    03 95
    Thumbs Up:   0
    It is strange and that might be the problem because at certain times it’ll blow hot air then you shut the car off and start it back up and it blows cold air

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