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Scorpion Forums Junkie Location: Menai area of Sydney Registered: June 2003	Re: 4AGE hose identification Tue, 24 February 2004 12:03 If you blow into the big thick pipe at the bottom, air will come out of the "vacuum port" (if it's not blocked). From what I can work out, this is a cold idle adjustment that is used to adjust your idle speed until the engine water heats up the idle valve under the throttle body. As the engine warms up, the vacuum port gradually closes. So I believe that what people are calling the A/C idle up is a combination of idle-ups and the device attached to the airbox allows filtered air to be fed through to the vacuum port and the amount of air (which decides your idle speed) is controlled by another adjustable valve in the vacuum line. I have tested this idea by having a cold engine with an unblocked idle valve, starting it up and it idles at about 3K, then gradually moving my finger across the vacuum port to slowly block it. As the port is blocked more and more the idle will drop. As the engine warms up, the volume of air through this port drops so there is less effect on the idle and when the engine is warm there is no air passing through the port. The water heated valve below the throttle body is referred to in some workshop manuals as the idle motor. The actual A/C idle up or any other idle up is connected through the top of the throttle body and increases the air flow into the plenum by bypasing the throttle butterfly and hence increases the revs slightly. [Report message to a moderator]

	Subject	Poster	Date
	4AGE hose identification	bmak	Thu, 19 February 2004 11:20
	Re: 4AGE hose identification	bmak	Thu, 19 February 2004 11:49
	Re: 4AGE hose identification	HighRolla	Thu, 19 February 2004 12:46
	Re: 4AGE hose identification	IRA11Y	Fri, 20 February 2004 06:16
	Re: 4AGE hose identification	HighRolla	Fri, 20 February 2004 06:20
	Re: 4AGE hose identification	bmak	Sun, 22 February 2004 11:58
	Re: 4AGE hose identification	HighRolla	Sun, 22 February 2004 12:47
	Re: 4AGE hose identification	ae95	Sun, 22 February 2004 15:00
	Re: 4AGE hose identification	HighRolla	Mon, 23 February 2004 00:04
	Re: 4AGE hose identification	HighRolla	Mon, 23 February 2004 05:22
	Re: 4AGE hose identification	HighRolla	Mon, 23 February 2004 05:44
	Re: 4AGE hose identification	ctan13	Wed, 28 September 2005 21:04
	Re: 4AGE hose identification	natez	Mon, 23 February 2004 10:04
	Re: 4AGE hose identification	HighRolla	Mon, 23 February 2004 10:32
	Re: 4AGE hose identification	natez	Mon, 23 February 2004 10:50
	Re: 4AGE hose identification	Scorpion	Mon, 23 February 2004 11:12
	Re: 4AGE hose identification	bmak	Mon, 23 February 2004 12:07
	Re: 4AGE hose identification	HighRolla	Mon, 23 February 2004 12:35
	Re: 4AGE hose identification	Scorpion	Mon, 23 February 2004 12:37
	Re: 4AGE hose identification	ae95	Tue, 24 February 2004 08:03
	Re: 4AGE hose identification	ae95	Tue, 24 February 2004 08:35
	Re: 4AGE hose identification	HighRolla	Tue, 24 February 2004 09:13
	Re: 4AGE hose identification	bmak	Tue, 24 February 2004 09:57
	Re: 4AGE hose identification	HighRolla	Tue, 24 February 2004 10:18
	Re: 4AGE hose identification	Scorpion	Tue, 24 February 2004 12:03
	Re: 4AGE hose identification	HighRolla	Tue, 24 February 2004 12:42
	Re: 4AGE hose identification	Scorpion	Tue, 24 February 2004 14:00
	Re: 4AGE hose identification	ae95	Tue, 24 February 2004 15:53
	Re: 4AGE hose identification	HighRolla	Tue, 24 February 2004 23:44
	Re: 4AGE hose identification	Scorpion	Wed, 25 February 2004 03:30
	Re: 4AGE hose identification	ae95	Wed, 25 February 2004 05:12
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 05:27
	Re: 4AGE hose identification	ae95	Wed, 25 February 2004 05:42
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 05:56
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 06:43
	Re: 4AGE hose identification	ae95	Wed, 25 February 2004 06:34
	Re: 4AGE hose identification	ae95	Wed, 25 February 2004 07:14
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 07:53
	Re: 4AGE hose identification	ae95	Wed, 25 February 2004 08:57
	Re: 4AGE hose identification	Scorpion	Wed, 25 February 2004 11:37
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 12:27
	Re: 4AGE hose identification	Scorpion	Wed, 25 February 2004 12:56
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 13:10
	Re: 4AGE hose identification	HighRolla	Wed, 25 February 2004 13:31
	Re: 4AGE hose identification	HighRolla	Thu, 26 February 2004 02:43
	Re: 4AGE hose identification	ae95	Thu, 26 February 2004 04:57
	Re: 4AGE hose identification	TopSecret72	Tue, 19 July 2005 10:31
	Re: 4AGE hose identification	sonwill	Thu, 21 July 2005 08:25
	Re: 4AGE hose identification	TopSecret72	Thu, 21 July 2005 12:51

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