Subject	Only the top solenoid on the IACV matters for idle. The
Posted by	Audioquest on May 03, 2008 at 11:33 AM
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In Reply To	Thought about them but haven't checked yet. posted by rojoloco (San Diego) on May 03, 2008 at 12:32 AM
Message	lower hex shaped one only increases idle when the engine is under load like AC etc. To test the AAC on the IACV unit, just touch 12 volts + and - to it. If it doesn't click it's either gummed up inside the casting or it's dead. When mine went bad it idled like crap. Another way to test it is once your engine is warm, unplug the AAC, set the idle to 650 and plug it back in. It should immediately rise to about 750, if not same thing, dirty or dead. Also test the Coolant Temp Sensor (or fouled connector) as if it's out of spec it'll do that too.
Follow Ups	Confusing idle. Tomorrow is my last chance to fix it. - rojoloco (San Diego) 21:54:35 05/02/08 To add a little more detail... - rojoloco (San Diego) 22:21:15 05/02/08 You check the air idle regulator and the throttle position - Waggz 22:38:01 05/02/08 Thought about them but haven't checked yet. - rojoloco (San Diego) 00:32:28 05/03/08 Only the top solenoid on the IACV matters for idle. The - Audioquest 11:33:53 05/03/08 Go back and check the turbo that you removed. Is it possible - Dave N 02:16:54 05/03/08 I hope this helps some for idle issues ... - The Devils Z 08:56:02 05/03/08 I had that exact problem earlier this week... - Slow3z 17:51:59 05/03/08 The gas tank is 3/4 full. It's been sitting for over a month - rojoloco (San Diego) 09:00:50 05/05/08
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