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bobkatmsu
Explorer
Jul 12, 2016

Shredded plastic shooting out a/c vents

2007 Safari Simba, gas 38'. Workhorse chasis. Took a trip last week and noticed, what looks like small pieces of thin, shiney, flakes of black plastic on the floor underneath the dash a/c vents. Didn't actually see them coming out of the vents, but can't imagine where else they would have come from. Cleaned them up when we got to the CG and they were there again, when we got home. Idea's?

8 Replies

  • Mice love to get into the vent system of vehicles and chew up insulation and plastic, and especially wiring.

    Pack rats bring all sorts of leaves and trash into their nests, which are often in the vent system and nearby. They also love to chew wiring.

    There is a large resistor in the AC system that is often times located around the heater box, inside it, or near the vent system. If a rat packs dry leaves, etc into the area where the resistor is, when it gets hot, it can light the leaves and dry stuff on fire, potentially burning down the vehicle.
  • lakebum wrote:
    bobkatmsu wrote:
    2007 Safari Simba, gas 38'. Workhorse chasis. Took a trip last week and noticed, what looks like small pieces of thin, shiney, flakes of black plastic on the floor underneath the dash a/c vents. Didn't actually see them coming out of the vents, but can't imagine where else they would have come from. Cleaned them up when we got to the CG and they were there again, when we got home. Idea's?


    Ours doing the same thing. Don't think it is mice as our unit is kept in a climate controlled building and have never had any mice issues.

    I think it is an age thing, duct work deteriorating.


    I live in a climate controlled house and mice just love to get inside. The point being just because it's climate controlled and just because you've never had mice issues, don't think that's why or it can't happen.
  • The duck work around the AC has an aluminum foil liner, with time it starts to flak off, not a problem. Some replace it I just cleaned it off.
  • bobkatmsu wrote:
    2007 Safari Simba, gas 38'. Workhorse chasis. Took a trip last week and noticed, what looks like small pieces of thin, shiney, flakes of black plastic on the floor underneath the dash a/c vents. Didn't actually see them coming out of the vents, but can't imagine where else they would have come from. Cleaned them up when we got to the CG and they were there again, when we got home. Idea's?


    Ours doing the same thing. Don't think it is mice as our unit is kept in a climate controlled building and have never had any mice issues.

    I think it is an age thing, duct work deteriorating.
  • Air ducts made of very thin aluminum foil wrapped around insulation breaking down after all these years and blowing out?