# d16 turbo idles rough. **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [April 23, 2009, 7:57pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683 "2009-04-23T19:57:11Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 7:57pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/1 "2009-04-23T19:57:11Z")
just turboed my d16 starts right up then starts idling like a heart beat. checked for leaks in my intake man. but couldnt find anything. checked the seals on the injectors still nothing. im just dumbfounded! asked around still no help! what else could make the idle rough. ---
**Author:** ![99\_civic\_si](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/99_civic_si/32/7319_2.png) [@99\_civic\_si](https://forums.speedlife.net/u/99_civic_si)\ **Post date:** [April 23, 2009, 8:12pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/2 "2009-04-23T20:12:02Z")
Tom, I’ll call you tomorrow morning. I just got home from work and have a ton of shit to do at the moment. ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 8:19pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/3 "2009-04-23T20:19:11Z")
no problem it started right up tho reved accouple times no bad noises. and the engine light came on ha… just idles rough… ---
**Author:** ![JDMSIR](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdmsir/32/7376_2.png) [@JDMSIR](https://forums.speedlife.net/u/JDMSIR)\ **Post date:** [April 23, 2009, 8:32pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/4 "2009-04-23T20:32:20Z")
What is the cel code? Did you touch the intake mani? Did you drain the coolant for any reason? Is it a hunting idle? ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 8:34pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/5 "2009-04-23T20:34:43Z")
i didnt not touch the intake mani just to take the injectors out and put 450cc injectors in. the coolant was low just filled it from the radiator. couldnt check the codes cause my code reader is at my work. what do u mean by hunting idle?even after it warmed up it still stayed the same. ---
**Author:** ![JDMSIR](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdmsir/32/7376_2.png) [@JDMSIR](https://forums.speedlife.net/u/JDMSIR)\ **Post date:** [April 23, 2009, 8:37pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/6 "2009-04-23T20:37:10Z")
Hunting( up and down). So its a bumpy idle them, hiccups here and there? ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 8:39pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/7 "2009-04-23T20:39:46Z")
no hiccups just up and down idle until i rev then idles for 2 seconds fine then goes to the up and down like a heart beat. ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 9:02pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/8 "2009-04-23T21:02:47Z")
just to put it out there i have a 97 civic and had to convert to obd1 with a basemap ---
**Author:** ![JDMSIR](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdmsir/32/7376_2.png) [@JDMSIR](https://forums.speedlife.net/u/JDMSIR)\ **Post date:** [April 23, 2009, 9:58pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/9 "2009-04-23T21:58:10Z")
How will you inspect it if its obd1? ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 23, 2009, 10:02pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/10 "2009-04-23T22:02:09Z")
by swaping everything back. i kno stupid… ---
**Author:** ![ScSpeed](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/scspeed/32/5105_2.png) [@ScSpeed](https://forums.speedlife.net/u/ScSpeed)\ **Post date:** [April 23, 2009, 10:36pm UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/11 "2009-04-23T22:36:23Z")
Have you checked your fast idle valve?? If not try cleaning it. Its located on the bottom of the tb. ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [April 24, 2009, 6:09am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/12 "2009-04-24T06:09:56Z")
So you put different size injectors in? Did you change the tune? ---
**Author:** ![ImsloIkno](https://avatars.discourse-cdn.com/v4/letter/i/58956e/32.png) [@ImsloIkno](https://forums.speedlife.net/u/ImsloIkno)\ **Post date:** [April 24, 2009, 6:14am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/13 "2009-04-24T06:14:44Z")
i did not tune yet ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [April 24, 2009, 6:17am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/14 "2009-04-24T06:17:55Z")
:picard: What size were your old injectors? You changed injector size, didn’t tune for them, and now wonder why your car is running rough at idle? ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [April 24, 2009, 6:40am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/15 "2009-04-24T06:40:11Z")
lol you doubled the size of the oem injectors and can’t figure out why it won’t idle. I am so glad I don’t tune hondas anymore. If you are using crome (or something similar) set your multiplier for 400cc injectors. That should help the idle, and then you should take it over to Mike. [http://www.nyspeed.com/forums/showthread.php?t=30897](http://www.nyspeed.com/forums/showthread.php?t=30897) ---
**Author:** ![slowa\_ek](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slowa_ek/32/5227_2.png) [@slowa\_ek](https://forums.speedlife.net/u/slowa_ek)\ **Post date:** [April 24, 2009, 6:43am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/16 "2009-04-24T06:43:53Z")
mine did the exact same thing, it has to do with the basemap tune and 450cc. it can be somewhat corrected if you mess with the iacv, but it will just idle really high, but its better than the back and forth revving. dude i turboed the exact same car as you if you need anything pm me. o yeah and dont bother with taking everything out for inspection heres how you pass. 1. get a safc 2. get and obd2 extension harness with safc wiring already spliced in from boomslang 3. when inspection time comes, swap in obd2 extension harness and stock computer 4. tune your safc so your car is drivable 5. pass inspection 6. go home and take that stuff off and put your obd1 computer and harness back in 7. done if you have an questions let me know ---
**Author:** ![slowa\_ek](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slowa_ek/32/5227_2.png) [@slowa\_ek](https://forums.speedlife.net/u/slowa_ek)\ **Post date:** [April 24, 2009, 6:46am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/17 "2009-04-24T06:46:29Z")
and the basemap i assume is for your 450cc injectors im sure? dont boost the piss out of it, you will be sorry ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [April 24, 2009, 6:48am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/18 "2009-04-24T06:48:40Z")
> [@slowa$$ek](#): > > and the basemap i assume is for your 450cc injectors im sure? dont boost the piss out of it, you will be sorry NO > [@newman](#): > > So you put different size injectors in? Did you change the tune? > [@ImsloIkno](#): > > i did not tune yet ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [April 24, 2009, 6:49am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/19 "2009-04-24T06:49:02Z")
To be exact, it is an injector sizing issue, and setting it to 450cc will cause an injector latency issue. Set it to 400cc, and take it in to have it properly tuned, or have it flat bedded to Mike’s. ---
**Author:** ![deebo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/deebo/32/5218_2.png) [@deebo](https://forums.speedlife.net/u/deebo)\ **Post date:** [April 24, 2009, 6:58am UTC](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683/20 "2009-04-24T06:58:33Z")
> [@newman](#): > > :picard: > > What size were your old injectors? > > You changed injector size, didn’t tune for them, and now wonder why your car is running rough at idle? his basemap is for his new injectors? … unless im reading it wrong/he typed it wrong [Next page](https://forums.speedlife.net/t/d16-turbo-idles-rough/66683.md?page=2)