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Stft

Discussion in 'Gen 3 Prius Technical Discussion' started by douglasjre, Apr 20, 2023.

  1. douglasjre

    douglasjre Senior Member

    Joined:
    Sep 13, 2008
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    Location:
    Orlando, FL
    Vehicle:
    2010 Prius
    Model:
    ----USA----
    Is 7% most throttle positions but 14% at wot and high rpms. Any idea what could make it goes up at wot? No error codes, Money Indicated Light is off
     
    #1 douglasjre, Apr 20, 2023
  2. StarCaller

    StarCaller Senior Member

    Joined:
    Feb 15, 2014
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    Location:
    Cedar Crest, NM, USA
    Vehicle:
    2014 Prius
    Model:
    Two
    If the fuel trim is high at wide-open throttle (WOT) and high RPMs, it could mean that the engine is running lean (not enough fuel). This can cause poor performance and possibly damage the engine. One solution could be to check the fuel pressure and fuel injectors to ensure they are functioning properly.
    Other possible reasons could be a clogged fuel filter, a malfunctioning mass airflow (MAF) sensor, a vacuum leak, or a faulty oxygen sensor.
     
    #2 StarCaller, Apr 21, 2023
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