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Bad smell from heater

kevlar2kevlar2 Posts: 5
edited February 2014 in Mitsubishi
This is for a 2003 mitsubishi diamante. I have a really bad burning smell coming from my vents in my car it starts as soon as I start the car. Its not burning oil! I have been told it smells like burning electrical or burning antifreeze. So I was planning on changing out my heater core?? has anyone had this problem before?? This is my first car and i need it to commute to work please help!!!


  • steverstever Posts: 52,683

    What kind of Mitsu? Year?

  • 2003 mitsubishi diamante
  • steverstever Posts: 52,683

    I think I'd want to narrow the problem down before replacing parts, much less the heater core. That's usually a big job, lots of labor on most cars.

    Doesn't sound like it's mold or mildew that you are smelling though.

  • I was first going to see if the hoses are leaking or if it's clogged cause there is a little bit of white smoke coming from the engine bay right next to the fire wall on the passenger side. I also have a tiny pin while in the radiator I'm it possible for that to cause a smell that would come in through the air vents??
  • Tiny pin hole*
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 61,420

    You might want to pressurize the cooling system with a pressure pump and see what turns up in terms of leaks. It doesn't take much of a leak to stink up a car.

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  • kevlar2kevlar2 Posts: 5
    So I bypassed the heatercore with a connector and ran the air full blast for 20 minutes and the smells gone it also stopped running as hot as it was runs at half now not 3/4. Thanks for all the advice!
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 61,420

    So what's your plan now?

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