# Fast Idle on a 2000 Saturn SL

**URL:** <https://community.cartalk.com/t/fast-idle-on-a-2000-saturn-sl/25381>\
**Category:** Maintenance/Repairs\
**Created:** [January 23, 2009, 5:04am UTC](https://community.cartalk.com/t/fast-idle-on-a-2000-saturn-sl/25381 "2009-01-23T05:04:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jfk1963](https://avatars.discourse-cdn.com/v4/letter/j/ce73a5/32.png) [@jfk1963](https://community.cartalk.com/u/jfk1963)\
**Post date:** [January 23, 2009, 5:04am UTC](https://community.cartalk.com/t/fast-idle-on-a-2000-saturn-sl/25381/1 "2009-01-23T05:04:55Z")

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My Saturn idles at 2400 RPM; I’ve replaced the Air Idle Control Value, the Throttle Position Sensor, all with no luck… Could you give me some advice on how to bring down the ide?

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [January 23, 2009, 5:36am UTC](https://community.cartalk.com/t/fast-idle-on-a-2000-saturn-sl/25381/2 "2009-01-23T05:36:14Z")

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Yes, find the vacuum leak. Vacuum leaks can occur from vacuum hoses. Disconnect the vacuum hoses, including the one to the brake booster, one at a time, and tape over the holes on the intake manifold. Does the engine idle slower with a vacuum hose disconnected? Check the large plastic intake tube for cracks and fit. Check the intake manifold for cracks. I hesitate to advise you to use a vacuum test gauge on the intake manifold.