Heater Core Mystery - 2004 WRX
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This is a discussion on Heater Core Mystery - 2004 WRX within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; My car vents are blowing white smoke and some coolant has leaked on the driver's side. Just the driver's side ...

  1. #1
    Registered User
    Join Date
    Dec 2013

    Heater Core Mystery - 2004 WRX

    My car vents are blowing white smoke and some coolant has leaked on the driver's side. Just the driver's side right just to the right of the gas pedal.

    I tested the hoses going into and out of the car and they were the same temp, so it's not blocked.

    I burped the radiator.

    The air blows hot.

    I'm confused because there is no blockage and it blows hot.

    Anything else I should check before taking to the shop?

    I can't pull the dash myself and its probably $1000+ all in.


    -No modifications
    -230,000 miles
    -Radiator replaced @ 180k miles
    -A/C not functional since 200k miles, belt has been removed (I don't think it's related)
    Last edited by xrayfigaro; 12-27-2013 at 12:37 PM.

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  3. #2
    Registered User cogito's Avatar
    Join Date
    Jul 2013
    Southern NH
    Definitely sounds like your heater core is leaking. On my old Camero I had a bad heater core and it was blowing white smoke out the vents.
    2013 WRX Dark Grey Hatch
    1974 Datsun 260z Stroker

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