# Idling Problem

**URL:** <https://community.cartalk.com/t/idling-problem/6610>\
**Category:** Maintenance/Repairs\
**Created:** [October 30, 2007, 3:36pm UTC](https://community.cartalk.com/t/idling-problem/6610 "2007-10-30T15:36:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DUSER1](https://avatars.discourse-cdn.com/v4/letter/d/71c47a/32.png) [@DUSER1](https://community.cartalk.com/u/DUSER1)\
**Post date:** [October 30, 2007, 3:36pm UTC](https://community.cartalk.com/t/idling-problem/6610/1 "2007-10-30T15:36:10Z")

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I have a problem with my car. I have brought it in for service, but they could not find the problem much to my frustration. When I start the car in the morning, particularly when it has been cold for a long period of time like in the morning, the car starts up very loudly and it idles rough. It drives fine (although it is still loud) but when I come to a stop and it is idling, it again idles rough. When I drive the car for 15-20 minutes, the car idles perfectly. As the mornings get colder, the idling and sound is getting worse. My mechanic could not diagnose the problem. I don’t know what to do at this point since the problem seems to be getting worse. The car is a Ford Focus 2001.

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [October 31, 2007, 3:35am UTC](https://community.cartalk.com/t/idling-problem/6610/2 "2007-10-31T03:35:27Z")

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Some maybes:

faulty IAC valve (I like this one)  
Dirty throttle body  
Faulty MAF sensor (Mass Air Flow)