Thread: blowing air,,but not hot

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  1. #1 blowing air,,but not hot 
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    2004 grand prix,when you turn on the heat,,it blows cool air,,,,like if the knob is turned to the cool side,,,heater core hoses are both warm/hot so i dont think its that,,,fan blows fine,,,it just the temp of the air coming out,,,,any tips?
     

  2. #2 Re: blowing air,,but not hot 
    GXP Level Member Blown97's Avatar
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    It could be either the Air conditioning/Heater Climate Control or the HVAC Heater/Air conditioning/ Vent Actuator. That is where I would start.
    3.4", 3" cated DP, SLP Air box, TB spacer, 180* Thermo, "Bilemke Tuning".

     

  3. #3 Re: blowing air,,but not hot 
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    i read somewhere the actuator is behind/under the glovebox,,,but what am i looking for,,,,also,,,the hvac climate thing,,,,how/where do i find that
     

  4. #4 Re: blowing air,,but not hot 
    GXP Level Member Blown97's Avatar
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    The Air conditioning/Heater Climate Control is the thing with the nobs on it.

    HVAC Heater/Air conditioning/ Vent Actuator is under the dash and looks like this: http://i19.ebayimg.com/01/i/000/8c/0b/05f7_1_b.JPG or like this http://i4.ebayimg.com/06/i/000/e1/d6/b983_1.JPG
    3.4", 3" cated DP, SLP Air box, TB spacer, 180* Thermo, "Bilemke Tuning".

     

  5. #5 Re: blowing air,,but not hot 
    GTP Level Member Smokin2000gtp's Avatar
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    Is your car getting up to temp?
    2000 Silvermist Grand Prix GTP Coupe

    Mods-Custom Thrasher CAI|Ceramic Coated S&S Headers|3.4" pulley|ZZP S4 Blower|Powrtuner|PRJ 10.4mm wires|HIDs|F-Body brakes|Koni's and Voglant's|
     

  6. #6 Re: blowing air,,but not hot 
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    yep,,,,,everything is normal,,feels normal,etc,,,,,just doesnt want to blow hot air,,
     

  7. #7 Re: blowing air,,but not hot 
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    so,,,how do i test the actuator,,,with a multimeter or?
     

  8. #8 Re: blowing air,,but not hot 
    SE Level Member gixer2000's Avatar
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    have you tried to bleed air out of your cooling system??? even though the hoses feel warn does not mean your getting flow through the heater core
     

  9. #9 Re: blowing air,,but not hot 
    SE Level Member cboth686's Avatar
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    Quote Originally Posted by gixer2000 View Post
    have you tried to bleed air out of your cooling system??? even though the hoses feel warn does not mean your getting flow through the heater core
    ^^^ That's most likely what it is...you probably have an air lock in your cooling system. I worked at a radiator shop for a number of years and saw this in many cars. When we replaced radiators, we would test to see if they had hot air as a way of making sure there wasn't any air locks in the system.
     

  10. #10 Re: blowing air,,but not hot 
    SE Level Member dadadana's Avatar
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    Did you resolve the issue? My 06 isnt blowing hot air, wife had a blazer that did same thing untill we flushed radiator. the red anti-freeze crystalized according to local shop...
     

  11. #11 Re: blowing air,,but not hot 
    GT Level Member neel2008's Avatar
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    ive had this issue a few times on different cars/trucks and flushing out just the heater core with a garden hose did the trick each time....i hook up a line from garden hose to inlet, then outlet to ground/bucket, turn hose on, wait until the water running out is clear, swap inlet for outlet and "backflush" it, keep going back and forth until its always nice and clean, hook lines back up, bleed cooling system, enjoy.
    97gtp

     

  12. #12 Re: blowing air,,but not hot 
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    Quote Originally Posted by dadadana View Post
    Did you resolve the issue? My 06 isnt blowing hot air, wife had a blazer that did same thing untill we flushed radiator. the red anti-freeze crystalized according to local shop...
    mimi

    Last Activity: 11-03-2008 11:03 PM

    check these things next time.

    You shouldnt have red coolant.... it should be orange.

    It also should be changed periodically.

    Quote Originally Posted by neel2008 View Post
    ive had this issue a few times on different cars/trucks and flushing out just the heater core with a garden hose did the trick each time....i hook up a line from garden hose to inlet, then outlet to ground/bucket, turn hose on, wait until the water running out is clear, swap inlet for outlet and "backflush" it, keep going back and forth until its always nice and clean, hook lines back up, bleed cooling system, enjoy.
    See above about the whole 2008 thing.
     

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