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Smoking from the heater vents!

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    Smoking from the heater vents!

    I believe I know the problem, but just double checking first. Basically, when the car is being driven (especially at faster RPMs such as highway speeds), the symptoms are as follows:

    If heater ON and set to WARM -- smoke comes out of the vents and smells somewhat like antifreeze
    If heater OFF and set to WARM -- hardly any smoke and only minor smell
    If heater ON/OFF but set to COLD (no A/C) -- nothing

    I double checked that it wasn't something else, such as oil burning off the manifolds. So, I'm guessing that I have a coolant leak in the heater core...right? The radiator has been losing fluid, but there is nothing on the inside of the car on the floorpan. If the heater core is leaking, how hard of a fix to pull it out? Do I pull it from the engine compartment or under the dash?

    Thanks! This car has 258k miles and it wouldn't be possible without this forum!

    #2
    probably a pinhole in the heater core. Check for leaks in the hoses connected to the core first though. Heater core is a bastard job.

    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

    Originally posted by gadget73
    ... and it should all work like magic and unicorns and stuff.

    Originally posted by dmccaig
    Overhead, some poor bastards are flying in airplanes.

    Comment


      #3
      yup, heater core is done.
      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Comment


        #4
        You have to disconnect the dash from the firewall and pull it away enough to remove the heater plenum.
        ~David~

        My 1987 Crown Victoria Coupe: The Brown Blob
        My 2004 Mercedes Benz E320:The Benz

        Originally posted by ootdega
        My life is a long series of "nevermind" and "I guess not."

        Originally posted by DerekTheGreat
        But, that's just coming from me, this site's biggest pessimist. Best of luck

        Originally posted by gadget73
        my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.




        Comment


          #5
          Does anyone have a detailed procedure list, or do I just start loosening the bolts from underneath the dash?

          Comment


            #6
            check out the stickies in this forum. You'll find what you seek.

            Everything to do with interior and body electrical including headlights and tail lights. CFI specific discussions and AC/heating systems.

            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

            Originally posted by gadget73
            ... and it should all work like magic and unicorns and stuff.

            Originally posted by dmccaig
            Overhead, some poor bastards are flying in airplanes.

            Comment

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