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Old 07-17-2018, 04:37 PM   #1
saturny
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Default Weird idle issue

Whenever I come to a stop and the RPMs come down to idle speed, I get a quick idle drop for a fraction of a second... kind of like it misses or something. Then it just resumes regular idle speed like nothing happened.

So, I replaced the fuel filter (yes, the proper kind) and ECTS, and it still does it. It's not causing any problems right now, but any ideas?

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2000 Saturn SL1 (w/ DOHC) automatic - 273k

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Old 07-17-2018, 06:04 PM   #2
Cheyne
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2000 SL2
Default Re: Weird idle issue

Have you tried cleaning the throttle body/IAC?

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Old 07-18-2018, 04:09 AM   #3
KNGRK9
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1999 SL2
Default Re: Weird idle issue

Quote:
Originally Posted by Cheyne View Post
Have you tried cleaning the throttle body/IAC?
Also try cleaning the EGR valve!

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Old 07-18-2018, 08:40 AM   #4
BV22
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2002 SC1
Default Re: Weird idle issue

My SC-1 has done this for years. Idle randomly drops to 600 rpm for half a second and recovers to normal. I've learned to ignore it, since it has continued through EGR valve, TPS and IACV replacement.

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Old 07-18-2018, 11:13 AM   #5
saturny
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Default Re: Weird idle issue

Quote:
Originally Posted by Cheyne View Post
Have you tried cleaning the throttle body/IAC?
I'll give this a shot - the price is right...

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