Help! Torque converter went bad?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Lemonhead228, Aug 12, 2025 at 11:33 AM.

  1. Lemonhead228

    Lemonhead228 New Member

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    2005 Prius
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    I have 2005 prius with 175k miles. I was driving 70mph on the interstate and try to accelerate but I can hear the motor rev up but no acceleration.

    After this I changed the trans fluid and inverter fluid but nothing has changed.

    I also read up these cars have e-cvt and will hold up for awhile? No clue. Trying to pinpoint my issue.

    I can still take the car around in the back roads like 40-50mph but not the interstate. Driving around town I feel like the car is more sluggish. I usually average 45mph. Now it dropped to 35mph.

    Any help is greatly appreciated!!

    Thanks!
     
    #1 Lemonhead228, Aug 12, 2025 at 11:33 AM
  2. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

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    Well there's no torque converter cause it's not an automatic transmission. But it does sound like some worn gears inside the Power Split Device (PSD) or the eCVT. Seems odd but I suppose it's possible? Another possibility is a worn MG2 I guess.
     
    #2 Tideland Prius, Aug 12, 2025 at 12:53 PM
  3. bisco

    bisco cookie crumbler

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    any trouble lights? if not, i would look at the standard gas engine areas
     
    #3 bisco, Aug 12, 2025 at 1:39 PM
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