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Engine always running

Discussion in 'Gen 3 Prius Fuel Economy' started by Beefense, Jun 27, 2019.

  1. Beefense

    Beefense New Member

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    Location:
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    Vehicle:
    2012 Prius Plug-in
    Model:
    ----USA----
    I actually drive a 2010 Ford Fusion hybrid, but when I had my Prius this website was the greatest so I’m posting here hoping someone may be able to help

    So this car has a diagnostic in the dash, it says everything is OK...

    Basically this car doesn’t function as a hybrid anymore - the only time it goes full battery mode is at full stop, park, or in reverse. Other than that, the engine is always running. In start and stop traffic the car will go silent when I stop and then even just idling forward the engine kicks on and brings my mpg waaaaaaay way down.

    Any easy troubleshooting suggestions if this were your Prius doing this?
     
    #1 Beefense, Jun 27, 2019
  2. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
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    Vehicle:
    2010 Prius
    Model:
    Touring
    This might be one of the first Prius Plug-Ins with possible battery problems.

    I'm not sure what that means, which display, what's it saying? Maybe post a few more times (5 posts minimum?), and this will allow you to post a picture of what you're seeing.

    For starters take a look at the hybrid battery fans, clean them as needed. I'm not that familiar with the Plug-In fans, understand they're relatively easy to access though.

    How many miles on it?

    How long have you had it?

    How's the 12 volt battery; do you know how old it is? Original?

    Plug-In owners should weigh-in soon. :)
     
    #2 Mendel Leisk, Jun 27, 2019
  3. mjoo

    mjoo Senior Member

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    How old is your 12V battery? When the 12V is near dead it becomes a space heater
     
    #3 mjoo, Jun 27, 2019
  4. fotomoto

    fotomoto Senior Member

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    OP is very confusing but I think he's asking about his Ford Fusion hybrid.

    He'll get a lot of guesses here but there are knowledgeable Ford hybrid forums out there where he'd get better answers.
     
    #4 fotomoto, Jun 27, 2019
    Mendel Leisk and mjoo like this.
  5. Grit

    Grit Senior Member

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    So this is for a fusion? If so, hook up tech stream to the ford obd2
     
    #5 Grit, Jun 27, 2019
  6. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    Use Toyota Techstream on a Ford??
    Good luck with that! :D
     
    #6 Prodigyplace, Jun 27, 2019
    Grit likes this.
  7. Dxta

    Dxta Senior Member

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    What? Is tecjstream compatible with Ford's obd2 ?
     
    #7 Dxta, Jun 27, 2019
    Prodigyplace likes this.
  8. Lovec1990

    Lovec1990 Junior Member

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    Its hard too help becouse i doubt Ford has same Hybrid tech as Toyota perhaps you could find dedicated forum for Ford cars?
     
    #8 Lovec1990, Jun 28, 2019
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