# 2009 ford focus rough idle only in warm weather

**URL:** <https://community.cartalk.com/t/2009-ford-focus-rough-idle-only-in-warm-weather/117705>\
**Category:** Maintenance/Repairs\
**Tags:** focus, ford\
**Created:** [May 20, 2018, 12:33pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle-only-in-warm-weather/117705 "2018-05-20T12:33:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Joyce\_Gault](https://avatars.discourse-cdn.com/v4/letter/j/ee59a6/32.png) [@Joyce\_Gault](https://community.cartalk.com/u/Joyce_Gault)\
**Post date:** [May 20, 2018, 12:33pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle-only-in-warm-weather/117705/1 "2018-05-20T12:33:51Z")

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Last week it got warm outside 80 degree temps and my car idles really rough at 500 RPMsThis week we’ve had a few cool days-50 and 60 degrees outside and now it idles normal 750 rpms. What would cause this and how can it be fixed?

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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:** [May 20, 2018, 4:09pm UTC](https://community.cartalk.com/t/2009-ford-focus-rough-idle-only-in-warm-weather/117705/2 "2018-05-20T16:09:13Z")

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Try having the electronic throttle body cleaned.

![](https://global.discourse-cdn.com/cartalk/original/2X/d/d936959ecca473ec8e4e8275f3c67d1e2298f6c4.jpg)

Tester