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Intermittent Drivetrain Noise

Discussion in 'Model S: Driving Dynamics' started by Shadowjack, Jul 4, 2017.

  1. Shadowjack

    Shadowjack Member

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    Location:
    Beechhurst, NY
    During a recent 1,000 mile trip, I noticed my Model S 60D would make a faint noise under acceleration from the front of the car that sounded a little like a diesel engine. Often times, it would be masked by tire or wind noise. The more I pushed the accelerator, the louder the noise would become, but it continued at the same pitch and speed. It only seemed to manifest when the car had been going 70+ mph for a while and disappeared once the car was going slower for a while. It didn't really sound like the milling noise people have posted on YouTube. Has anyone experienced this?
     
  2. scottm

    scottm Active Member

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    Location:
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    others have found similar sounds... turned out to be flapping body panel parts, front, lower

    hits a resonant frequency (pitch) driving faster raises amplitude (loudness)

    it wasn't a matter of loose or missing fasteners, just excessive flexing and rattling at speed due to wind
     
  3. Shadowjack

    Shadowjack Member

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    Location:
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    Seems like that might be different from what I was experiencing. I could only hear the sound when pushing the accelerator. The more I pushed, the louder it was, even if the car's speed wasn't changing that much. I'd hear nothing when coasting at the same speed.
     
  4. scottm

    scottm Active Member

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    CV joint maybe..

    Can you feel any lumpiness?
     
  5. Shadowjack

    Shadowjack Member

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    Location:
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    The car is smooth overall; it just makes the sound under the circumstances I described. It has less than 2,000 miles on it so far.
     

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