# '99 Ford Tarus

**URL:** <https://community.cartalk.com/t/99-ford-tarus/9072>\
**Category:** Maintenance/Repairs\
**Created:** [January 6, 2008, 2:34pm UTC](https://community.cartalk.com/t/99-ford-tarus/9072 "2008-01-06T14:34:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![2marcs](https://avatars.discourse-cdn.com/v4/letter/2/b487fb/32.png) [@2marcs](https://community.cartalk.com/u/2marcs)\
**Post date:** [January 6, 2008, 2:34pm UTC](https://community.cartalk.com/t/99-ford-tarus/9072/1 "2008-01-06T14:34:39Z")

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The car does not stay idiling when I first start up in the morning. After approx. 20 miles, it starts idiling high. Someone suggested it my be the catalytic converter?

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**Author:** ![charles](https://avatars.discourse-cdn.com/v4/letter/c/6f9a4e/32.png) [@charles](https://community.cartalk.com/u/charles)\
**Post date:** [January 6, 2008, 3:33pm UTC](https://community.cartalk.com/t/99-ford-tarus/9072/2 "2008-01-06T15:33:16Z")

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there is a ton of things that can cause I would stop by auto zone and they can help read your codes. I,am thinking on the line,s of a coolant  
sensor not telling the cumputer the engine is cold and the idle is not in cold mode. the idle speed motor may be stuck . I will guess if you  
push down on gas pedal just slightly the engne will idle . does this work?

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**Author:** ![charles](https://avatars.discourse-cdn.com/v4/letter/c/6f9a4e/32.png) [@charles](https://community.cartalk.com/u/charles)\
**Post date:** [January 6, 2008, 3:37pm UTC](https://community.cartalk.com/t/99-ford-tarus/9072/3 "2008-01-06T15:37:16Z")

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you said it might be the cat when the catalytic converter go,s bad it slowly get clogged and what happen,s is a lose of power after the engine and the CAT gets hot.