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Hi! I've got a 2002 Toyota Sienna XLE 3.0L and while checking on the condition of the air filter, discovered a hose behind and to one side of the filter housing (drivers side) not connected to anything - I'm wondering if it should be connected to something, or just hang there drawing air. I felt around the very tight space where it rested and didn't detect an inlet (The 2nd photo it was resting like I found it, in the last photo I raised it)

One other question regarding the same 2002 Toyota Sienna XLE 3.0L regarding the TWO O2 sensors before the rear cat sensor (the two sensors in the in the engine compartment that I think are referred to as - bank1 sensor 1, and bank 2 sensor 1) What I would like to know is if these two sensors are the same ? And that I could be replace both just by buying a bank1 sensor 1 (ubiquitous for purchase online).

Thank you very much!
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