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Lower mileage after serpentine belt replaced

Discussion in 'Gen 2 Prius Main Forum' started by Joshace, Sep 13, 2016.

  1. Joshace

    Joshace Junior Member

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    Prius Hybrid WAS consistently getting over 42 mpg but after serpentine belt was replaced my Meineke, it now gets only 30 mpg. What could they have done wrong?
     
    #1 Joshace, Sep 13, 2016
  2. 09Prius2

    09Prius2 Member

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    They may have knocked a connection loose while replacing the belt. Are there any lights on / check engine light?
     
    #2 09Prius2, Sep 14, 2016
  3. Joshace

    Joshace Junior Member

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    The check engine light has always been on as far as I can remember.
     
    #3 Joshace, Sep 14, 2016
  4. DonDNH

    DonDNH Senior Member

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    Yeah, check for something disconnected or not properly seated near the belt.
    Time to get the DTC codes read to help determine the underlying problem(s) with your car.
     
    #4 DonDNH, Sep 14, 2016
  5. 09Prius2

    09Prius2 Member

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    If the check engine light has always been on than there would be no way of knowing if anything had changed due to the service, other than your mpg of course. As previously stated, the scan codes should provide you the relevant information you need.
     
    #5 09Prius2, Sep 15, 2016
    valde3 likes this.
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