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1 Hertz variation in power while flooring it

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by R-P, Jan 14, 2015.

  1. R-P

    R-P Active Member

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    Due to a drawbridge/liftbridge opening just in front of me, I was suddenly in a great rush.

    So I floored my Prius (really floored it) a few minutes after startup to take the longer route to my daughters school. I noticed a slight sinusoidal variation in power (maybe 5% max?) that was reoccuring with a frequency of about one Hertz.
    Sound familiar? Something to do with the voltage dropping on the HV battery, the power drawn from it being throttled back, the voltage recovering, the power being increased, etc???
    Due to
     
  2. uart

    uart Senior Member

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    Sorry I don't have any insight into the 1Hz fluctuations, but when you mentioned needing to floor it because of an opening bridge I couldn't help but be reminded of this classic moment. :D
     
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  3. GrumpyCabbie

    GrumpyCabbie Senior Member

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    EGR valve problem? Are you at about 70/80k miles (120k km)? Did your sudden surge free some carbon deposit that has now found it's way somewhere it shouldn't?

    I'm only guessing, but maybe try some fuel system cleaner. Or take it to the dealers if you can afford :)
     
  4. bisco

    bisco cookie crumbler

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    try avis?
     
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  5. R-P

    R-P Active Member

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    :) took me a while...
     
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  6. bisco

    bisco cookie crumbler

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  7. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

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    I dont know about your Prius, but what an exhilarating story! :LOL: I could picture the whole scenario in my head just by reading that.

    I pictured this:
    [​IMG]
     
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  8. GrumpyCabbie

    GrumpyCabbie Senior Member

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    And when I think of the Dukes of Hazard I think of her, I mean this;

    [​IMG]
     
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  9. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

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    R-P, can you please confirm or deny that during your tactical Prius maneuver, that a.) your Prius looked like the Dodge flying over the "bridge out" and or b.) that when you arrived at your daughters school, the scene looked exactly like the picture that GrumpyCabbie posted?? :LOL:

    Ok sorry for hijacking, I just wanted to create a few "hump-day" smiles and laughs. :D
     
  10. uart

    uart Senior Member

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    Seems like we think alike PriusGuy. Though I was thinking more like this. :D

    dukes.jpg
     
  11. GregP507

    GregP507 Senior Member

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    When my Android phone responds to my key-presses with a 1 Hz lag, I know it's time to free-up more memory by moving some apps to the storage card.
     
    #11 GregP507, Jan 14, 2015
    Last edited: Jan 14, 2015
  12. PriusGuy32

    PriusGuy32 Prius Driver Extraordinaire

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    :LOL::LOL::LOL:

    Thats so awesome. I might steal it for my sig line! haha!
     
  13. R-P

    R-P Active Member

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    Glad you're all taking my problem so serious...
























    :ROFLMAO::ROFLMAO::ROFLMAO:
     
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  14. dolj

    dolj Senior Member

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    If you were in the first minute of driving and you floored it, there would be a short lag (of less than a second) and then a surge of power, if, when you floored it, you were still in stage 1 of warmup. When you floored it, you would have forced the warm up cycle into stage 2 and there is a brief lag followed by a surge at this point as the computer reconfigures itself to respond to the request for power. I haven't had a lot of experience myself as I normally would not be in the "Scotty, give me all she's got" situation so soon after start-up. I don't identify with sinusoidal characteristic you describe.

    I don't know if that is of any help.