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sounds like a cricket?

Discussion in 'Roadster' started by pharma5, Nov 29, 2012.

  1. pharma5

    pharma5 Roadster F#25

    Joined:
    Nov 22, 2011
    Messages:
    453
    Location:
    central NJ
    while heading home and plugging in (115V 15A in not-freezing but cold garage) noticed a small squeaking noise that sounds almost like a steady cricket:confused: - this is in tandem with the normal hum & whirr as coolant circulates through the battery. may have noticed at the last stoplight by home, but certainly after pulling and plugging in.

    coolant seems to be moving fine, but sound is coming from the general vicinity of the coolant tank at the right side of the PEM. nothing else abnormal that i've picked up yet.

    could this be anything special, or maybe just a loose connect that squeaks now (perhaps louder than it used to:smile:)?
     
  2. Pantera Dude

    Pantera Dude Member

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    Mar 18, 2012
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    468
    Location:
    Long Beach, California
    Maybe it IS a cricket? :tongue: I got a million of em! I'll be here till Tuesday, don't forget to tip your waitress!


     
  3. pharma5

    pharma5 Roadster F#25

    Joined:
    Nov 22, 2011
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    453
    Location:
    central NJ
    A bit cold for that here, but I'll take it!:biggrin: Just so long as the coolant keep pumping. Basically stopped today... just a got a little bit of the sound momentarily at plug-in time.
     
  4. wiztecy

    wiztecy Active Member

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    Apr 29, 2012
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    Location:
    Santa Cruz, California, United States
    Only thing that would be running at that time is the pump to circlulate the coolant through the pack and if its a high pitch it could be a bearing/bushing going bad. If its still making the odd noise I'd call / email Tesla and have it checked out.
     
  5. neopav

    neopav Member

    Joined:
    Apr 16, 2009
    Messages:
    10
    Hi Pharma5,
    I am now over 100.000 kms on my Roadster, and as I have already understood almost every sound the car emits, I know perfectly what you mean...
    Don't worry, it's just a ferrite nucleos on the high-voltage orange cables next to the coolant tank that is vibrating to the frequency of the current being transported.
    These nucleos (the black plastic hexagons, one per cable, just outside the PEM, but also inside) can get loose over time, and start vibrating.
    At the next annual Roadster service, ask your Ranger to tight these nucleos with some tape.
    But it's not dangerous, don't worry! Just a bit annoying, as it can happen whil charging at given amps, or also while driving at given accelerations...
     

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