Question about 1999 Ford Expedition

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Rear heater core leak and overheating 99' expedition

It started spittin antifreeze out a few weeks ago and last night it finally overheated

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  • johnjrdiii Sep 27, 2009

    Have you tried and any 'Stop leak' ? It might be worth a try, otherwise
    the core will have to come out for a repair. Your overheating may be
    because it's low on antifreeze from leaking. The thermostat is usually
    the cause of overheat, has that been changed yet?



    Its leaking from the two rubber hoses that go down and out in the rear of the vehicle right at the pressed clamps. Last night the heat took a while to warm up then it only blew hot air for a couple minutes. There was also a bit of steam coming ut out the vents that fogged the windows.

    I noticed the temp gauge was a bit high last night as well then it spiked from hot to in the red


  • Anonymous Mar 11, 2014

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    Can't split unit in to in order to reeplce cord.I've removed all the screws and still can't

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    while adding new driver for ricoh printer i get everytime

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  • Master
  • 1,714 Answers

Have you tried and any 'Stop leak' ? It might be worth a try, otherwise the core will have to come out for a repair. Your overheating may be because it's low on antifreeze from leaking. The thermostat is usually the cause of overheat, has that been changed yet?

Posted on Sep 27, 2009

  • Craig Butler
    Craig Butler Sep 27, 2009

    Re fit those hoses with 'hose clamps' from the hardware store. That will stop it.

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