Noise Coming From Blower?

Discussion in 'Gen 3 Prius Main Forum' started by Mr. EZ, Dec 26, 2019.

  1. Mr. EZ

    Mr. EZ New Member

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    I’m about to purchase a 2012 Prius 3? They say it’s a 4 so I’m not sure. It’s a nice car but the issue is when the heat is on ,well turned to high it makes a very loud grinding type of noise. I’m just trying to get an idea on what it could be and what to expect repair wise and cost. Thanks in advance for any help or feedback.
     
  2. Grit

    Grit Senior Member

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    That’s enough info to not walk but run away from this dealership.
     
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  3. bisco

    bisco cookie crumbler

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    welcome!
    there's probably litter in the fan blades. ask them to open up the cabin filter and take a look.

    more importantly, have you done your due dilegence here, researching gen 3 egr and head gasket failyres?

    how many miles on her?
     
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  4. edthefox5

    edthefox5 Senior Member

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    Give us the miles on the car when asking about it please.
     
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  5. BZzap!

    BZzap! Senior Member

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    Bisco is probably correct...debris in the fan cage. It’s not anything major to correct but may be rodent damage elsewhere. I would negotiate with the seller to have it corrected before you buy. What seems to be a minor problem can turn into a huge mess if rodents have infested the car.
     
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  6. dig4dirt

    dig4dirt MoonGlow

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    The 3 is probably referring to the Generation 3
    And the Four is the model/trim level of that Gen3 Prius
     
  7. Grit

    Grit Senior Member

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    OP is paying listed price for a trim 4 on a trim 3. If your willing to pay trim 4 dollars on a trim 3 then be my guest.
     
  8. bisco

    bisco cookie crumbler

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    i hope he wasn't about to purchase it last thursday...
     
  9. Mendel Leisk

    Mendel Leisk Underfoot

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    My eyes almost read that as squirrel cage...

    Yeah, very likely rodent infestation, and dealership doesn't want to know? Maybe you don't want to know them. That said: they're ALL like that, so yeah: if you persevere: get them to pull the glove box, see for sure what's going on.

    The fix btw: is to pull off the wipers/motors and underlying cowl, and afixing a 1/4" opening size rodent screen over the cabin air intake.
     
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  10. Grit

    Grit Senior Member

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    I was thinking along the line of putting rat bait poison near window cowl cabin opening to save wrenching for plan B.
     
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  11. Johnny Cakes

    Johnny Cakes Senior Member

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    Even if the dealer has cleaned out all of the tell-tale signs of rodent infestation, you still wouldn't know what they have gnawed on before they got evicted.
     
  12. BZzap!

    BZzap! Senior Member

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    I would think twice about putting rat bait anywhere in the car. Remember... it’s poison...usually Warfirin. It’s a blood thinner that systemically makes the critters hemorrhage internally and die. You certainly don’t want any decomposing rodents in your car. Additionally you wouldn’t want to have this poison circulating around in your HVAC system.
     
  13. justphilly

    justphilly Junior Member

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    I just fixed a related problem five minutes ago on my Prius (2011 Prius standard model, Three trim)
    I wanted to replace the cabin air filter. I remembered there was a sound like a leaf being scraped against something whenever the cabin air blower was running. Well, yeah that's exactly what it was. After I pulled the cabin air filter I noticed it was put in sideways. Pretty sure that was me that put it in wrong when I was both hurried AND lacking clear knowledge of how to install the thing correctly. It had been pinched at a couple spots. The semi-rigid edges of this filter go at the front and back of the car, not the left and right. The soft floppy edges go at the left and right. The arrow for "air flow direction" on your filter should point toward the blower (down) not away from it.
    Anyway the cabin air blower is right below the cabin filter housing so if you remove the filter (fan OFF please) you can stick your fingers in there and grab any foreign object that may be sitting on the blower.
    In my case the fix required no disassembly of the car aside from pulling the glove box out and the cabin filter cover off (YouTube explains how to do this; it's a no-tools job but you need to know where the parts fit together in order to remove them)
     
    #13 justphilly, Dec 29, 2019
    Last edited: Dec 29, 2019
  14. bettergolf

    bettergolf Active Member

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    You guys have probably scared Mr EZ away from buying his Prius and from this board! Poor guy asked about a noise in the fan and now he is being ripped off by the dealership (did he even say it was at a dealership?) because he isn't sure if it's a 3 or 4 (he thought it was a 3, they say it's a 4....maybe they are right and he's not?) and now horror of all horrors he has a rodent infestation that has been covered up by the seller and the car could have all kinds of wiring problems due to the gnawing habits of these (imaginary?) critters and he can't use poison to get rid of them because he will breathe this poison through his HVAC when the rodent dies and rots inside the car.
    Why hasn't anyone warned him that the head gasket is about to blow and that he shouldn't buy it because it's a gen3 and they ALL blow the head gaskets and that he'll certainly need a new hybrid battery within months if not weeks?

    Sheeeeesh!
     
  15. Grit

    Grit Senior Member

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    If you gon own a gen 3, you gon get.
     
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