# Rough ideling 98 Chevy Lumina

**URL:** <https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584>\
**Category:** Maintenance/Repairs\
**Tags:** lumina, rough\
**Created:** [October 30, 2007, 12:59am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584 "2007-10-30T00:59:15Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Andy40](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@Andy40](https://community.cartalk.com/u/Andy40)\
**Post date:** [October 30, 2007, 12:59am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/1 "2007-10-30T00:59:15Z")

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My Lumina runs great but idels rough. I,ve changed the plugs, wires, air and gas filters. Anyone have what I should check next?? Thanks for your ideas…

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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:** [October 30, 2007, 1:06am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/2 "2007-10-30T01:06:23Z")

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No Check Engine light?

Tester

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**Author:** ![Andy40](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@Andy40](https://community.cartalk.com/u/Andy40)\
**Post date:** [October 30, 2007, 1:11am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/3 "2007-10-30T01:11:12Z")

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The check engine light is not on… No lights are on…

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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 30, 2007, 2:51am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/4 "2007-10-30T02:51:06Z")

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Spray some throttle body cleaner in the intake and see if that improves the idle. It may be dirty.

OR, it may be a faulty IAC (Idle Air Control) valve.  
This isn’t a given, but seems to help most non-idling problems.

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [October 30, 2007, 10:36am UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/5 "2007-10-30T10:36:50Z")

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If Roadrunner’s suggestions do not help, try reading codes anyway. Sometimes they can have codes without the light on.

Some auto parts stores will read them for free.

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**Author:** ![willey](https://avatars.discourse-cdn.com/v4/letter/w/a9adbd/32.png) [@willey](https://community.cartalk.com/u/willey)\
**Post date:** [October 30, 2007, 4:08pm UTC](https://community.cartalk.com/t/rough-ideling-98-chevy-lumina/6584/6 "2007-10-30T16:08:23Z")

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You could have one cylinder with low compression. Do a compression test if the other things you try don’t cure the problem.