You may have a warrant for your arrest for any number of things, including:
Will the police come looking for you? Probably. Especially if it is an arrest warrant, felony/violent/sex crime. Otherwise, if you are on bond, the bounty hunter will likely come to get you first.
HERE is the link to Johnson County, Kansas' warrant search. If the county you believe your warrant is from doesn't have an online access an attorney can find out for you. Don't wait to handle these matters on your own. It won't just go away. Plus, once you resolve the warrant you still will have the original matter to handle. Call Attorney T. Morton today (913) 602-7288. Payment plans are available.