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Coolant Leak - Heater Core V70-XC70 1998

posted by  higgins1 on  Mon Dec 9 09:33 CST 2002
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last visit: Tue Aug 8 15:00 CST 2000
[RELATED]

I have a puddle of coolant on the driver's side floor. I pulled the carpet and plastic cover down and see the leak at the clamp where the aluminum coolant pipes enter the blower housing (and attach to the core) It leaks most when the car is cold and with no pressure leading me to suspect the 0-rings/clamp assembly rather than the core (i.e. the rings contract during the cold and cause the leak) Of course the dealer says I need a new core for $315 + 2 hours of labor for a total of about $450. I'm not convinced I need a new core. Any ideas or similar experiences/fixes out there?








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    Coolant Leak - Heater Core 850 1995

    posted by  HO on  Tue Dec 10 01:10 CST 2002
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    last visit: Tue Aug 12 14:01 CST 2014
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    As Earl mentioned, do a pressure to verify the leak. If it is the o-ring as you assumed, then just buy the o-ring from dealer and replace it yourself. It is a easy job to do. The pipes to heater core are held by a torx screw which located in the middle of the two pipes. Unscrew this screw, you can wiggle the pipes out of the heater core unit to replace the o-rings.

    Ching-Ho Cheng
    --
    1995 855 NA, Bilstein Shocks, K&N Filter, E-Code Lens








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    Coolant Leak - Heater Core V70-XC70 1998

    posted by  someone claiming to be Earl on  Tue Dec 10 00:35 CST 2002 [RELATED]

    It's either the core itself or the o-rings (4) where the two tubes connect between the firewall and heater core. I've seen both leak but if you're unsure, pressure test the cooling system and look at the tubes and core area.







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