# E36 IAC? **URL:** \ **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:** 44
**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 18, 2013, 4:47pm UTC](https://forums.speedlife.net/t/e36-iac/266379/44 "2013-03-18T16:47:37Z")
> [@Newb here](https://forums.speedlife.net/t/newb-here/51912/23): > > ohhh shit actually I’ve heard this very thing happening with those ebay mafs. that’s probably your issue. surprising it hasn’t thrown a code for it though… I got a known good MAF, needless to say, this is not the issue. I ran a compression test on the vehicle. Here’s the numbers: CYL # 1 - 200psi CYL # 2 - 195 CYL # 3 - 190 CYL # 4 - 165 CYL # 5 - 200 CYL # 6 - 205 My Bentley manual states that the minimum 142-156psi, so I have no clue whats going on here. The head was replaced, prior to me getting this car. I have no clue what vehicle it came off of. It also appears that it was never run trough a machine shop prior to the install. I’m seriously thinking about swapping out this engine for a 328 right about now. I’m going to pull the front O2 sensor and take it for a ride when the weather clears up. Hopefully this will tell me if it’s a clogged cat or not. --- _[View the full topic](https://forums.speedlife.net/t/e36-iac/266379)._