If you are dissatisfied with the quality of Bing’s search results or are being redirected to Bing when using another search engine, you can remove Bing as your default search engine. Firefox has a dedicated Manage Search Engines tool designed to help you add and sort search engines. You can also use it to remove the Bing search engine all together. If the search engine you want to use is not listed, click the “Get more search engines” link, locate the search engine you want to add and click the associated “Add to Firefox” button. Writer Bio

How Do I Remove Bing as the Default Firefox Search Engine  - 42