# SR20DET irratic idle **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [May 19, 2005, 5:59pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443 "2005-05-19T17:59:05Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![wagner](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/wagner/32/6004_2.png) [@wagner](https://forums.speedlife.net/u/wagner)\ **Post date:** [May 19, 2005, 5:59pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/1 "2005-05-19T17:59:05Z")
My 240 is running like crap. It has an irattic idle (500-1500-500-1500) and is running rich. I pulled my plugs and they were all black. I cleaned them up and it ran ok for 5 min. and then it started to run like crap again. I think either I have a boost leak, oxygen sensor is bad or my MAF sensor is bad. Does anybody have any other ideas on things to check? ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [May 19, 2005, 6:13pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/2 "2005-05-19T18:13:34Z")
HD 724-925-2660 Jay ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [May 19, 2005, 6:40pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/3 "2005-05-19T18:40:06Z")
> [@PewterSS](#): > > HD 724-925-2660 Jay ---
**Author:** ![traydogg6969](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/traydogg6969/32/5999_2.png) [@traydogg6969](https://forums.speedlife.net/u/traydogg6969)\ **Post date:** [May 19, 2005, 7:17pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/4 "2005-05-19T19:17:45Z")
> [@PewterSS](#): > > HD 724-925-2660 Jay ---
**Author:** ![The1SloR\_T](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/the1slor_t/32/5984_2.png) [@The1SloR\_T](https://forums.speedlife.net/u/The1SloR_T)\ **Post date:** [May 19, 2005, 7:26pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/5 "2005-05-19T19:26:20Z")
check your PCV Valve!!! my shelby did the EXACT same thing when my PCV valve came loose Im putting money on a Vac leak. so check the PCV ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [May 19, 2005, 7:30pm UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/6 "2005-05-19T19:30:40Z")
Iac ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [May 20, 2005, 3:40am UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/7 "2005-05-20T03:40:58Z")
> [@The1SloShelby](#): > > check your PCV Valve!!! my shelby did the EXACT same thing when my PCV valve came loose > > Im putting money on a Vac leak. so check the PCV do,listin to a boy that cant fix his (wheaterexcuse)timming! :rolleyes: ---
**Author:** ![brokeasskorean](https://avatars.discourse-cdn.com/v4/letter/b/e19b73/32.png) [@brokeasskorean](https://forums.speedlife.net/u/brokeasskorean)\ **Post date:** [May 20, 2005, 6:15am UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/8 "2005-05-20T06:15:28Z")
woooooooo tech hotline!! ---
**Author:** ![ritalin](https://avatars.discourse-cdn.com/v4/letter/r/74df32/32.png) [@ritalin](https://forums.speedlife.net/u/ritalin)\ **Post date:** [May 21, 2005, 4:41am UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/9 "2005-05-21T04:41:00Z")
Given that you’re running really rich and having idle problems i’ll put 5 on maf. ---
**Author:** ![paNX2K\_SE-R](https://avatars.discourse-cdn.com/v4/letter/p/dfb087/32.png) [@paNX2K\_SE-R](https://forums.speedlife.net/u/paNX2K_SE-R)\ **Post date:** [June 1, 2005, 7:11am UTC](https://forums.speedlife.net/t/sr20det-irratic-idle/174443/10 "2005-06-01T07:11:15Z")
Are you recirculating or venting your bov? If you are venting then that can cause major probs at idle unless you have a super stiff bov spring (and that usually causes compressor surge too). Does it run ok once you are off idle? If the maf was bad then it won’t want to rev over 3k.