Thread: Heater Probs

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  1. #1 Heater Probs 
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    2003 Grand Prix...heater blows cold air; it only blows hot air if I drive anywhere between 55-70 mph...when I slow down or let off the gas pedal it blows luke warm and eventually gets cold. Any ideas! Thanks!
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  2. #2 Re: Heater Probs 
    The mod from over yonder TheOtherNick's Avatar
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    Flush out your heater core.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  3. #3 Re: Heater Probs 
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    Will do...flushing it out tomorrow. I heard dex-cool is what is screwing things up...what can I use instead? Have you heard the same? I noticed the cap is kinda "gunky".
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  4. #4 Re: Heater Probs 
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    flush and flush again till its clean.

    dex is fine if you keep air out and change it every 2-3 years.
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  5. #5 Re: Heater Probs 
    SE Level Member trickytransam's Avatar
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    It sounds like its low on coolant. Did you check your levels? Leaks? Intake Gaskets?

    Use Prestone All Make All Model

    Its much better than Dexcool, and will reduce your operating temps by 5 degrees.
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  6. #6 Re: Heater Probs 
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    Quote Originally Posted by trickytransam View Post
    Its much better than Dexcool, and will reduce your operating temps by 5 degrees.
    It is supposed to be the same thing.
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  7. #7 Re: Heater Probs 
    honda owner. jerZcavy4120's Avatar
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    I'm having almost the same problem, the heat will only get as hot as the engine is... luke warm engine. luke warm heat. hot engine warm heat... so just flush the coolant and that should remedy the situation, cause i do have coolant already but its red/orange dexcool tho i believe, will i have any issues with that???
    Jenny, The '99 Silvermist GTP. With the mod's that matter.
    I would rather lose by a mile because I built my own car, than lose by an inch, because someone else built it for me. Your car is your story, so don't let someone else write the book.
    http://www.grandprixforums.net/threads/76250-Jenny-(Picture-Heavy)/page2
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  8. #8 Re: Heater Probs 
    I GIVES MONIEZ JoshsGTP's Avatar
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    you have an Air bubble!
    Red GTP coupe, Intake, Poly Dogbones. 8K HID's, Headers, DIY HUD, Aeroforce Scan Gauge,Kenwood Excelon KDC-X794, MSR 045 18" rims, Borla Cat-Back.

    I disprove of peoples actions, and want to mega man punch them in the testicals.
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  9. #9 Re: Heater Probs 
    honda owner. jerZcavy4120's Avatar
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    air bubble??? i have a hose thats JUST startin to go bad
    Jenny, The '99 Silvermist GTP. With the mod's that matter.
    I would rather lose by a mile because I built my own car, than lose by an inch, because someone else built it for me. Your car is your story, so don't let someone else write the book.
    http://www.grandprixforums.net/threads/76250-Jenny-(Picture-Heavy)/page2
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  10. #10 Re: Heater Probs 
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    Turns out I had a intake manifold gasket leak, I was loosing coolant...I got it flushed and had the dex replaced with something else.
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