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Horrible grinding noise upon cold start up...

Discussion in 'Gen 2 Prius Main Forum' started by Mystery Squid, Jan 24, 2006.

  1. Mystery Squid

    Mystery Squid Junior Member

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    May 18, 2005
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    Seems to only happen when it gets REALLY cold, somewhere in the teens (F). It was sort of warm out last night after our snowstorm, thus a wet Prius sat in the driveway. Well, temperature drops, everything freezes, and when I went to start her up today, a vicious grinding noise took place for about 3-5 seconds as the ICE started... It's about the second or third time this has happened, and only during particularly cold mornings. I use what, 5/30 fully synthethic Mobil 1, but I get a sneaky suspicion it's not the ICE...

    ...anyone experience the same thing? Thoughts, comments, opinions, theories?
     
  2. Frank Hudon

    Frank Hudon Senior Member

    Joined:
    Jan 11, 2004
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    coolant transfer pump as were starting to find out. Happened on the wife's 2k4 on the last cold snap.