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Whirring sound coming from engine V70-XC70 1998

posted by  Maco on  Wed Jun 29 11:00 CST 2005
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last visit: Tue Jun 9 23:48 CST 2009
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1998 v70 awd, sound coming from engine sounds like a whirring high pitched when first driving and sometimes at end of driving you can hear it cycle. It starts with a low pitch to a high pitch and then cycles back down. Usually only lasts for 30 sec to min. Sounds a little like an electric weed wacker. Explanation?








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    Whirring sound coming from engine V70-XC70 1998

    posted by  someone claiming to be Douglas on  Sun Jul 3 00:39 CST 2005 [RELATED]

    Possibly a water pump that's about to give out..... either that or a bad alternator. If it's a growl, it's the former. If it's an electrical sound, it's the latter. Either way, it's going to need attention ASAP before you're stranded on the road somewhere.








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      Whirring sound coming from engine V70-XC70 1998

      posted by  Maco on  Sun Jul 3 02:16 CST 2005
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      last visit: Tue Jun 9 23:48 CST 2009
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      Is there a way to figure out which one it is? It makes this sound when the car is first driven after being started.








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        Whirring sound coming from engine V70-XC70 1998

        posted by  Sleddriver on  Thu Aug 18 13:52 CST 2005
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        last visit: Tue Jun 1 09:39 CST 2010
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        I'll bet it's the air blower you hear. Sounds like a vaccum cleaner? It's located underneath the battery and blows air into the exhaust (I believe) via a valve until the engine warms up. It's a pollution-control device.

        I forget what the "proper" name for the thing is, but you can do a search on it.
        --
        1998 V70 T5 110Kmi; Previous car: 1985 SAAB 900T, 254kmi







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