Error 404 Not Found

Can someone please advise?

I have a WP site here https://www.2007escalade.net/escalade/. This is an RSS feed site. I deleted 4 RSS feeds except for 1. I also manually went into WP under Manage/Posts and deleted some files with the name “Ford” in them.

In doing this i am now finding a bunch of Error 404 Not Found pages when i do a site index search in yahoo for 2007escalade.net. Go to yahoo.com and type in site:2007escalade.net and click on no.11. You’ll see what I mean.

I know that WP deleted the content of those files but how can I actually get rid of those pages so that Yahoo won’t pull those up?

Can someone please help me with this? Much appreciated!!

Drew