Question about 2003 Kia Sorento

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Antifreeze leaking from firewall little hose for drain of air cond.

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It sounds like you have a heater core leak. I would recommend taking your vehicle to a shop to have them pressure test the cooling system, that will give them an idea of where your leak is coming from.

Posted on Oct 14, 2010

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Usually when antifreeze is coming from the firewall area it is due to a heater leak.
It could be the heater core. or any associated connections and valves

Posted on Oct 14, 2010

  • STIG6630 Mar 04, 2011

    just out of curiousity, was it the heater core? i have never seen a heater core leak on these but i have seen many coolant reservoirs leak which are quite close to the firewall. Kia even came out with an updated reservoir cuz their factory ones were such rubbish

  • patf Oct 07, 2012

    no i know its the hose

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1 Answer

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Age of vehicle determines that you get a replacement hose and clips first. Drain down the Coolant into a container, replace the hose, and refill, remembering you are going to loose coolant by spillage on the drain down.
Regards, DT

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