# How to check for a bad 02 sensor? I'm running rich

**URL:** <https://forums.speedlife.net/t/how-to-check-for-a-bad-02-sensor-im-running-rich/29152>\
**Category:** NYSpeed Automotive\
**Created:** [May 11, 2007, 2:00pm UTC](https://forums.speedlife.net/t/how-to-check-for-a-bad-02-sensor-im-running-rich/29152 "2007-05-11T14:00:08Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\
**Post date:** [May 11, 2007, 2:56pm UTC](https://forums.speedlife.net/t/how-to-check-for-a-bad-02-sensor-im-running-rich/29152/6 "2007-05-11T14:56:52Z")

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well, if the cat is hollow its going to smell more like gas. is this car turbo? im just asking that based on your Diy manifold statement. if its a turbo car that is a whole nother set of variables lol. does the car have an adjustable fuel pressure regulator or anything like that?

maybe see if you can borrow a wideband from someone just to get an acutal number as to what the fuel ratio actually is

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