97 Blazer poor gas mileage

My wifes truck is getting terrible mileage 130 to the tank. it statres two weeks ago on a road trip. it seems to be running fine other wise. I wondering if anyone else has had this problem? Maybe suggestions to fix it?
Kelly Sumner
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Sometimes when the 02 sensor goes bad it will do that.

it?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com 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.