That's the Manifold Air Temperature sensor. It's attached to the Intake Manifold.
Should look something like this... http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?itemIdentifier=438883_0_4155_&skuDescription=Dorman+/+Connector-Manifold+Air+Temp+Sensor&brandName=Dorman&displayName=Connector-Manifold+Air+Temp+Sensor&categoryNValue=15799999&sortType=&store=2124&isSearchByPartNumber=false&fromWhere=&fromString=search&counter=0&itemId=2651-0&navValue=15702651&filterByKeyWord=manifold+air+temperature&productId=438883&searchText=manifold+air+temperature&categoryDisplayName=Electrical+%26+Lighting&parentId=57-0
Sorry if repost, too lazy to check.
http://www.boston.com/business/articles/2010/04/30/family_provider_far_apart_over_nearly_18000_phone_bill/?s_campaign=yahoo