# 2009 ford focus rough idle

**URL:** <https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618>\
**Category:** Maintenance/Repairs\
**Created:** [July 17, 2019, 7:56pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618 "2019-07-17T19:56:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jetsbro03\_154764](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@jetsbro03\_154764](https://community.cartalk.com/u/jetsbro03_154764)\
**Post date:** [July 17, 2019, 7:56pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618/1 "2019-07-17T19:56:23Z")

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2009 Ford Focus having rough idle needle bounces at stop signs or lights any ideaon what can fix it thanks

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [July 17, 2019, 8:06pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618/2 "2019-07-17T20:06:21Z")

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The Idle Air Control valve controls the engines idle speed under all conditions.

[https://www.rockauto.com/en/catalog/ford,2009,focus,2.0l+l4,1443428,fuel+&+air,idle+air+control+(iac)+valve,6072](https://www.rockauto.com/en/catalog/ford,2009,focus,2.0l+l4,1443428,fuel+&+air,idle+air+control+(iac)+valve,6072)

Sometimes these IAC valves malfunction where they hunt for the proper idle speed, which causes the needle on the tach to bounce.

Tester

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<div class="post-metadata">

**Author:** ![jetsbro03\_154764](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@jetsbro03\_154764](https://community.cartalk.com/u/jetsbro03_154764)\
**Post date:** [July 17, 2019, 10:50pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618/3 "2019-07-17T22:50:26Z")

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I read the 09 focus does not have an IAC I cant fix cars just something I read

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**Author:** ![jetsbro03\_154764](https://avatars.discourse-cdn.com/v4/letter/j/3d9bf3/32.png) [@jetsbro03\_154764](https://community.cartalk.com/u/jetsbro03_154764)\
**Post date:** [July 17, 2019, 10:51pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618/4 "2019-07-17T22:51:00Z")

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And thanks for the help

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [July 17, 2019, 11:20pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle/144618/5 "2019-07-17T23:20:29Z")

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[https://www.rockauto.com/en/catalog/ford,2009,focus,2.0l+l4,1443428,fuel+&+air,idle+air+control+(iac)+valve,6072](https://www.rockauto.com/en/catalog/ford,2009,focus,2.0l+l4,1443428,fuel+&+air,idle+air+control+(iac)+valve,6072)

RockAuto disagrees that your Focus does not have an IAC…