# Rough runner

**URL:** <https://community.cartalk.com/t/rough-runner/41162>\
**Category:** Maintenance/Repairs\
**Created:** [December 23, 2009, 12:58am UTC](https://community.cartalk.com/t/rough-runner/41162 "2009-12-23T00:58:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![steve88](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@steve88](https://community.cartalk.com/u/steve88)\
**Post date:** [December 23, 2009, 12:58am UTC](https://community.cartalk.com/t/rough-runner/41162/1 "2009-12-23T00:58:08Z")

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i have a 1998 f150 6 cyl.  
  
 if it idles in gear like redlight it starts to run rough. but i put it in nuetrel and it smooths out.runs good while driving and idles good in park also.  
  
 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:** [December 23, 2009, 1:06am UTC](https://community.cartalk.com/t/rough-runner/41162/2 "2009-12-23T01:06:07Z")

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The problem might be with the Idle Air Control circuit/valve. Especially on a Ford of this vintage.

Tester