Question about 2000 Volvo V70

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Coolant leak in 2000 Volvo V70 XC AWD with turbo

After returning from a 2 week holiday i drove my 2000 Volvo V70 XC AWD with turbo on the highway... 30 minutes later the temperature gauge rocketted to the red zone. I pulled over, topped it up with 50:50 antifreeze, got home.. bled the system.
Next day i changed the thermostat, bled the system. A week goes by and the 'low radiator' light show up on the dashboad. I top it up...

No drops of coolant fluid show up on my garage floor.

I occasionally smell the rad fluid on a cold day in my heating, could it be the heater core? If so, is there a test ? Is there a resource that can show me how to access the heater core to evaluate if I need to replace it? Any help is most welcome.
Cheers all.

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  • andreelgin May 15, 2010

    Yes, good points.. the oil is perfectly fine so i do not suspect a head gasket (thank goodness). No condition codes or warning lights on dashboard.
    The front floor mat is dry.

    Hmmm any other ideas.. is there a pressure test that one can connect to id a leak??



  • andreelgin Jun 16, 2010

    I found that the change of thermostat has resolved much of the loss, however i have also noticed the smell of coolant when i start the car or rallaye the car sharply on a street.

    Can someone point me to a great site that explains with pictures how to replace the heater core in this beast. Summer is here so a bit of grease monkey work is timely.
    Cheers to all helpers on this matter, truly appreciated.


  • andreelgin Jun 16, 2010

    Any thought about a website that has instructions with picture on replacing a v70 heater core?

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Have you checked to make sure its not leaking into your oil. most heater core leaks will be on the front floor of the passenger side of the car.

Posted on May 15, 2010

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It is the heater core,
you will have the driver's floor wet instead of pass. side

Posted on Jun 15, 2010

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I had a similar problem and eventually the leak got worse. Turned out it was the heater core but was leaking on the opposite side so I never had leakage on the driver's side floor. I had the heater core replaced and that fixed the coolant smell while running the AC or heat but I'm still losing small amounts of coolant. It has been suggested that it might be a head gasket or a cracked head. My oil is OK and I haven't noticed white smoke in the exhaust so I'm doubtful. Still, no dripping and loss of coolant only from driving, nit sitting. And it's running rough after new plugs and ignition coils.

Posted on Jul 28, 2010

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