bell noise in front end

can someone please help me? I have a windstar, it just started making a bell noise when the car is idling and stoped. Can someone please tell me what it could be. Thanks

Posted using the interface, at author's request
Articles individually checked for conformance to usenet standards
  Click to see the full signature.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.