# bad idle
**URL:** https://forums.speedlife.net/t/bad-idle/159502
**Category:** NYSpeed Automotive
**Created:** [August 24, 2010, 8:58pm UTC](https://forums.speedlife.net/t/bad-idle/159502 "2010-08-24T20:58:19Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@hondakid](https://forums.speedlife.net/u/hondakid)
#### Post date: [August 24, 2010, 8:58pm UTC](https://forums.speedlife.net/t/bad-idle/159502/1 "2010-08-24T20:58:19Z")
ok so so my b16a dosent want to stay idleing… has a very very low idle… the ecu spits a code of 14 witch is the idle air control valve (IAC) and its pluged in to the back of the intake manifold but still has a horribale idle… help?
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### Author:  [@Jam](https://forums.speedlife.net/u/Jam)
#### Post date: [August 24, 2010, 9:43pm UTC](https://forums.speedlife.net/t/bad-idle/159502/2 "2010-08-24T21:43:46Z")
Iac is bad
vac lines are bad
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### Author:  [@Bull49](https://forums.speedlife.net/u/Bull49)
#### Post date: [August 25, 2010, 1:01am UTC](https://forums.speedlife.net/t/bad-idle/159502/3 "2010-08-25T01:01:27Z")
> [@Jam](#):
>
> Iac is bad
>
> vac lines are bad
these are good places to start.
i had a bad tps give me similar problems and a simple cleaning fixed it. but, since the ecu is telling you iac, i would start with that.
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### Author:  [@hondakid](https://forums.speedlife.net/u/hondakid)
#### Post date: [August 25, 2010, 11:40am UTC](https://forums.speedlife.net/t/bad-idle/159502/4 "2010-08-25T11:40:12Z")
aight thanks
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### Author:  [@Fry](https://forums.speedlife.net/u/Fry)
#### Post date: [August 25, 2010, 11:58am UTC](https://forums.speedlife.net/t/bad-idle/159502/5 "2010-08-25T11:58:55Z")
IAC valves get clogged with carbon. See if you can clean it with some carb cleaner.
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### Author:  [@ubengineering](https://forums.speedlife.net/u/ubengineering)
#### Post date: [August 26, 2010, 5:40am UTC](https://forums.speedlife.net/t/bad-idle/159502/6 "2010-08-26T05:40:31Z")
instead of being penny wise dollar foolish, replace the sensor
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### Author:  [@Fry](https://forums.speedlife.net/u/Fry)
#### Post date: [August 26, 2010, 5:49am UTC](https://forums.speedlife.net/t/bad-idle/159502/7 "2010-08-26T05:49:30Z")
What sensor? Before or after he cleans the valve?
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### Author:  [@95d16turbo](https://forums.speedlife.net/u/95d16turbo)
#### Post date: [August 26, 2010, 7:51am UTC](https://forums.speedlife.net/t/bad-idle/159502/8 "2010-08-26T07:51:50Z")
also try a different ecu. i had the same code with my car and i put 3 iacv’s in my car, same problem. tried a different ecu and that fixed it.
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### Author:  [@system](https://forums.speedlife.net/u/system)
#### Post date: [August 26, 2010, 9:35am UTC](https://forums.speedlife.net/t/bad-idle/159502/9 "2010-08-26T09:35:09Z")
^ Please start cheap before you replace your ECU.
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### Author:  [@Fry](https://forums.speedlife.net/u/Fry)
#### Post date: [August 26, 2010, 9:43am UTC](https://forums.speedlife.net/t/bad-idle/159502/10 "2010-08-26T09:43:19Z")
lol don’t forget to swap your motor. You might also want to buy a different car and try that just in case it’s how you drive.
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### Author:  [@95d16turbo](https://forums.speedlife.net/u/95d16turbo)
#### Post date: [August 26, 2010, 10:36am UTC](https://forums.speedlife.net/t/bad-idle/159502/11 "2010-08-26T10:36:39Z")
obviously start cheap. thats just what i had to do. just giving him more ideas on what it could be.
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### Author:  [@hondakid](https://forums.speedlife.net/u/hondakid)
#### Post date: [August 26, 2010, 10:48am UTC](https://forums.speedlife.net/t/bad-idle/159502/12 "2010-08-26T10:48:41Z")
well i got all that fixed i had a vac line ran to tha wrong spot and i had the wrong plug pluged in to tha iac plug… the only thing that i am haveing trouble with now is once its running and it warms up tha rpms drop but they drop well past 200 rpms …