302 is not an error status. It means a page was not at the location the user specified, but it was found somewhere else and the user is being redirected there.
Your problem is that you are redirecting infinitely, so the browser aborts (after following some number of redirects to the same URL, smart browsers will assume that the server is broken and stop following them).
I have no way of knowing, but it sounds like you were using mod_rewrite to make “pretty urls” for your site, and those rewrite rules are broken now that you’ve deleted the page(s) they point to.
You might start by checking if you have an
.htaccess file in your web root directory. Do not make any changes without making a backup copy first. Look for
RewriteRules that include URLs to files you have deleted.