# E36 IAC? **URL:** https://forums.speedlife.net/t/e36-iac/266379 **Category:** Shift518 Automotive **Created:** [March 4, 2013, 2:08pm UTC](https://forums.speedlife.net/t/e36-iac/266379 "2013-03-04T14:08:29Z") **Posts on this page:** 1 **Showing post:** 41
### Author: ![CJRando](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cjrando/32/6369_2.png) [@CJRando](https://forums.speedlife.net/u/CJRando) #### Post date: [March 17, 2013, 2:21pm UTC](https://forums.speedlife.net/t/e36-iac/266379/41 "2013-03-17T14:21:51Z")
> [@Newb here](https://forums.speedlife.net/t/newb-here/51912/18): > > A low tech way to see if the cat is your problem would be to pull the upstream O2 sensor and see if it makes any difference. As in pull it from the exhaust pipe or unplug the sensor? --- _[View the full topic](https://forums.speedlife.net/t/e36-iac/266379)._