# My old 93 ford aerostar panel van **URL:** \ **Category:** General Discussion\ **Created:** [July 11, 2011, 11:11pm UTC](https://community.cartalk.com/t/my-old-93-ford-aerostar-panel-van/66175 "2011-07-11T23:11:24Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![valoister](https://avatars.discourse-cdn.com/v4/letter/v/ce7236/32.png) [@valoister](https://community.cartalk.com/u/valoister)\ **Post date:** [July 11, 2011, 11:11pm UTC](https://community.cartalk.com/t/my-old-93-ford-aerostar-panel-van/66175/1 "2011-07-11T23:11:24Z")
In the past couple of years, I have replaced the oxygen sensor about 2mth after the the guarantee is over. I have bought these sensors from places like N A P A and they are original replacement. I don’t understand why they keep going bad, other than just getting bad ones. Is there any other reason anyone knows why they keep going bad, or anything else I should change? Let me know Thanks Phil. P S maby I should get the next ones from autozone. ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [July 12, 2011, 2:20am UTC](https://community.cartalk.com/t/my-old-93-ford-aerostar-panel-van/66175/2 "2011-07-12T02:20:06Z")
When you remove the sensor is the cone burned away? Or possibly coked up? Or is a wire burned or chafed? There are several ways to fail. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [July 12, 2011, 4:05am UTC](https://community.cartalk.com/t/my-old-93-ford-aerostar-panel-van/66175/3 "2011-07-12T04:05:26Z")
Rather than stepping down in quality to AZ, step up to OEM maybe. I think for that vintage though its kind of a maintenance item with replacement at 30-50K intervals.