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Coolant loss V70-XC70 1999

posted by  roffe135 on  Tue Jun 19 08:17 CST 2012
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last visit: Thu May 9 18:44 CST 2013
[RELATED]

Hello.
Have a small, but persistent coolant loss in the last month or so. Have put about 1000 miles on the car since replacing the radiator, upper and lower hoses, thermostat a couple of months ago. I also replaced the A/C compressor, condenser and drier at the same time. After filling up with new coolant, the expansion bottle/canister dropped a little, which I figured was air getting out of the system, but during the last 500-600 miles I've had to fill up with appx 1/2 gal of 50/50 glycol water...
I have no visible leaks anywhere, no glycol smell inside the car (heater core was replaced a couple of years ago), no smoke or glycol in the oil..
Head gasket? It's not throwing off any codes (yet) gas mileage hasn't changed.
Any ideas?
Rolf








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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    Thanks Klaus.
    Started looking a little closer, took the timing belt covers off and with a flashlight under the car, while the engine was running saw a small drip from directly below the waterpump..Believe I've found the culprit..
    The pump only? has about 80k miles on it, aftermarket however..
    Thought they would last a little longer...Now waiting for a new one plus timing belt..



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      I have had a bad history with aftermarket pumps. I now will only use OEM. Tasca volvo has a good price on them.

      Make sure you torque the screws down nice and even. I wish they were easier to get to, but beats the heck out of VW/Audi or Subaru.

      --
      My name is Klaus and I am a V♂lv♂holic



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    If you suspect a head gasket failure, the easiest check is to pull all 5 sparkplugs and using a small flashlight, look for a very clean cylinder. A compression test also works.

    The only way to check for external leaks is with a hot engine immediately after shutdown. Using a clean paper towel, check all hose connections. Also the water pipe from the rear of the block to the turbo, where any coolant might just drip to the exhaust pipe.

    Remember, it is possible to clamp the hoses too tight and break the plastic tubes from the radiator.
    --
    My name is Klaus and I am a V ♂ lv ♂ holic



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