5sfe plug, WTF IS IT?! PIX [Archive] - Toyota MR2 Message Board

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I opend up my engine lid today to take a look in there and see where the coolant sensor is so i could test it, i thought it might be the culperit of my bad gas mileage. Well i look in there only to find this plug looking thing with a rubber boot over it just dangling. Does anyone know what it is? http://img.photobucket.com/albums/v313/cyfi/Car/00af08e3.jpg http://img.photobucket.com/albums/v313/cyfi/Car/5aee6535.jpg http://img.photobucket.com/albums/v313/cyfi/Car/d187a751.jpg