Re: 2000 hyundai accent

It sounds like you're describing the idle actuator. If I recall correctly, it does indeed hum when the key is on but the engine is not running.
Message posted using / More information at

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.