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Thread: Its snowing and I have no heat!!

  1. #1
    Registered Member

    03.5 Mazdaspeed Protege

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    Exclamation Its snowing and I have no heat!!

    Out of no where, my heat decided to go out the other day.. I replaced the thermostat and did a coolant flush on it yesterday thinking that may be the problem since the thermostat was stuck wide open.. Well, this did not fix anything.. The air coming out of the vents is still ice cold, even when I have the heat on pulling it off the engine. Im confused now and were getting down to the low 20's at night and having a high of mid 30s during the day.. any help would be appreciated as this is my daily driver for the time being


    03.5 MSP -- Custom, Catless Bolt On Exhaust; EDM Tails; Shaved Wing and Trunk; 6000k HIDs; Black RH's; Kartboy Shifter Bushings
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  2. #2
    TRU-BOOST THIS BITCH!!! axisboldaslove's Avatar

    07 MS3 GT Heavily Modified

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    you are screwed at least you don't have winters like WI
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  3. #3
    The All Knowing... mazdaspeedster3's Avatar

    Mazdaspeed3. 2008

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    Sounds like you need a heater core. Not a big deal, 3 hour job only because you probably have to drop your dash but it is doable. Drain your radiator fluid again.
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  4. #4
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    03.5 Mazdaspeed Protege

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    thanks for the quick response mazdaspeedster ... im gonna drain the radiator again and my dad said possibly flush the heater core as well? ive never had this problem so i have not ever looked into this type of shit
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  5. #5
    Registered Member Stormtrooper77's Avatar

    2003.5 Mazdaspeed Protege

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    Did you do any work in your dash area (hvac controls) over the summer? If you did, maybe you forgot to attach the cable that controls the heat knob. Just a thought. Other than that, yeah, the heater core.
    George

    2003.5 Ti Grey Metallic MSP

  6. #6
    1 OWNR MSP BOOSTR's Avatar


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    You'd have coolant in the passenger footwell if it was your heater core. Most likely the cable that operates the door has loosened or disconnected. I've seen a few threads on here about it in the past. You should always have heat, now a/c is another matter.

  7. #7
    Registered Member MSP2003.5_Nick's Avatar

    2003.5 Mazdaspeed Protege - Dark Silver

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    YEAH the cable man, i had that happen mutiple times, it's just a liuttle clip in the behind the center dash. You can get at it pretty decently from the passenger side floor. Just move the knob to see where it is. Gaurentee 100% thats it. it's a joke to fix. Just attach the clip back on the white plastic tab.
    MSP - 364 WHP, 358 Torque.
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  8. #8
    Registered Member

    03.5 Mazdaspeed Protege

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    the cable is attached, to the control knob at least.. that was the first thing i checked.. the heater door just isnt opening up.. im gonna take out the whole console again ad check every cable back there just to make sure but its definitely attached to the hot/cold knob.. not sure if its just getting caught up on something or whats goin on with it

  9. #9
    MSP# 518 SeR_Cyclops's Avatar

    Mazdaspeed Protege

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    man that sucks but my cable that attaches to the heater door (its under the glove box, its a white plastic door that pushes and pulls with the cable) comes off from time to time. i would check that.

  10. #10
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    03.5 Mazdaspeed Protege

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    alright ill go out and check that shortly.. hopefully that fixes the problem because im a tad bit tired of seeing my breath while driving
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  11. #11
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    Thanks

    I just bought a 2000 protege es yesterday. The heat worked fine when we test drove it but on the trip home it was no longer. I thought surely I was going to have to change the heater core. But the clip was the problem. Thanks I really appreciate your help.

  12. #12
    red wagon not included lil_red_wagon's Avatar

    lil white p5

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    yeah, this was wrong with my red wagon for the whole time that i had it. i found it out right before i wrecked it. it connects to the knob and then connects to a part of the inside of the dash to hold the tension.

    women are like turbos; mix them with alcohol and they will rock your world.

  13. #13
    FREAKY, BUT I LIKE IT!!!! mp3-79bronco's Avatar

    2001 protege mp3

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    same damn thing happened to me lol... im thinking about slapping a glob of jb weld over it

  14. #14
    nopistons3

    down to nothing now

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    You can also find the hoses going to the heater core, pull them and put a little bit of muratic acid in the heater core for no more than a minute then flush it out with water. It breaks up and dissolves any major pieces that could possibly clog the heater core

  15. #15
    Registered Member islander81's Avatar

    mazdaspeed protege 2003.5

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    Well i did sum wrk with my radio the other day and ya my air conditioning went out, then in the mornin my heater wuz out. Just to let yall know its that black wire back there that hooks up to the temperature knob.

    If it comes off tha clip that its on and roams free the temp will not work cuz it needs to be secured in order to push tha metal wire thats in it to change the temp.

    Im having that problem right now, i just have to put it back on tha clip and secure it. My lazy ass took out tha thang under the radio and held tha wire while i turned it to the temp i wanted till i have time to do it and it worked lol...
    (mp3yellow *MSP2003.5* #557#(yellomp3)

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