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what causes idle to drop?

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Old Jul 28, 2004 | 04:03 PM
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96white
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what causes idle to drop?
Over the last few months my idle has gone from just above 700 rpms and now its at or even below sometimes 600 rpms. What is going on, and what would cause this?

thanks
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Old Jul 28, 2004 | 04:07 PM
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njmodi
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Clean out the throttle body, replace the PCV valve, air filter, and while you have the air intake off, remove and clean out the IACV.
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Old Jul 28, 2004 | 04:32 PM
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96white
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I just put a brand new air filter on today, I cleaned the TB less then 10 k ago, the pcv valve works fine. I dont understand?
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Old Jul 28, 2004 | 07:01 PM
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njmodi
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Then it could be your IACV - this controls your idle speed via two solenoids and a stepper motor. Clean that out (stickies have some more info on how).
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