Question about 2000 Saturn SL

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System not ready...idle varies from 1000 to about wont pass emiss

System not ready...idle varies from 1000 to about 1800... Wont pass emissions...just says ''system not ready''

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I changed the Idle Air control Valve and it lowered the idle speed for about a week, when you remove the old one make sure you don't move the valve spring rod because will need to set the new one to match. I spoke to a mechanic and he told me that it may be the Catalytic Converter causing the issue. I haven't had that checked yet but the (IACV) didn't solve my issue.

Posted on Nov 30, 2009

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Posted on Jan 02, 2017

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Michael
ASE certified
PLZ rate.

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