Making an Air Filter for the Battery Cooling Fan

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by David Keevil, Sep 28, 2016.

  1. Mendel Leisk

    Mendel Leisk Underfoot

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    Hopefully this is not cargo cult, ie: a filter to keep the fan clean, but it restricts air flow, more than a dust-clogged fan. I would check it very frequently, especially over the next few days. A ScanGuage II to monitor fan speed and battery temp would be Rolls Royce.

    Toyota went from a completely open grill, to one with a coarse weave screen behind it. That was their judgment, on how to improve things. They didn't go further. Maybe they're being to cautious, but it's hard to say.
     
  2. David Keevil

    David Keevil New Member

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    Yes, I Had this thought too.
    But I reason that the Toyota engineers didn't have a big dog shedding fur on the drawing board.

    I feel that it is far far superior to have an easily cleaned filter clogged with dog fur rather than a difficult to clean fan screen and air passages back around the battery clogged with dog fur.

    The fact is, I have copious quantities of dog fur to deal with.

    When one owns a large breed dog, one vacuums the house and car quite frequently! The filter will be checked often.

    Now the scan gauge? My birthday is coming up quickly!

    Dave
     
  3. Mendel Leisk

    Mendel Leisk Underfoot

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    We have a Shiba Inu, northern clime dog, always shedding a bit. The cloth upholstery seems to snag most of it though.

    Our 2010 originally came with just an open plastic grill. I eventually settled on aluminum window screen as an adjunct. Here's the spacing, for reference:

    image.jpeg

    Again, do not know if denser filter is too much, but this seems to snag his hair. I should have another look at our fan. When I do I'll try to remember to post. Last time it was a thin patina of dust.

    That's maybe the main thing I think: check the actual fan every so often.
     
    #23 Mendel Leisk, Sep 29, 2016
    Last edited: Sep 29, 2016
  4. Kevin_Denver

    Kevin_Denver Active Member

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    A filter is great idea if you have dog(s) in the car.

    I haven't seen it done on a 3rd gen, but on the 2nd gen you can just get a piece of panty hose (if you're a guy, just shrug off the checkout clerk who might think you're a cross-dresser, not recommended for those in a small town! hahaha) and put it over the air inlet. It seems like a really good fit for this purpose: to maintain as much airflow as possible, but catch all dog hair. It looks like you could do this here as well without having to craft or fit anything. Then obviously you just cut off the excess and replace as needed.

    The furnace filters look like they'd block a lot of airflow, but just the screen looks like it might let some hairs through. This might strike a good middle ground.
     
  5. David Keevil

    David Keevil New Member

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    I'm very comfortable with the fish tank filter medium. I've seen too much fur pass through screens and such over the years, it's surprising how much fur goes through a screen!

    Dave
     
  6. kevins007

    kevins007 Active Member

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    Glad you found a solution.
     
  7. ILuvMyPriusToo

    ILuvMyPriusToo Senior Member

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    The fish won't get past it either! :eek:

    Great write-up! (y)
     
  8. whitmanrf

    whitmanrf Junior Member

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