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86tt Forums Junkie Location: Sydney Registered: August 2004	Re: Air Bypass Valve Fri, 11 February 2005 12:55 Scorpion wrote on Fri, 11 February 2005 22:47 On the 4AG, the air valve is on the bottom of the throttle body. If you see where the accelerator cable connects to the cam (on the side of the intake plenum )that opens and closes the throttle butterfly, have a look underneath it. There should be two thin radiator hoses that carry hot water through the bottom of the air intake mouth. If you look inside the intake mouth, you'll see a hole in the bottom through which extra air is sucked when the engine is cold. As the water heats up, it passes through the idle valve on the bottom of the intake and heats a wax pellet (like a thermostat). As it heats up, the mechanism closes and cuts off the extra air going into the engine. If the mechanism is blocked up, when the engine is warm one hose will be hot and the other cold. If it's working, both will get hot as the water passes through. When the engine is cold and running, block the hole with your finger and the revs should drop. Do it when the engine is hot and the idle shouldn't drop - or only by 100rpm or so - if the idle drops then your idle valve isn't working properly. yeah I know this one, but the problem is my throttle body's piping have all been welded shut... so either I find a "bypass valve" or I find a RWD intake manifold, which I think the 1st item is easier to find... [Report message to a moderator]

	Subject	Poster	Date
	Air Bypass Valve	86tt	Sun, 23 January 2005 17:42
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 02:52
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:14
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 03:21
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:22
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 03:29
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:34
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 03:38
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:43
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 03:53
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:57
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 03:58
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 04:11
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 04:17
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 04:25
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 04:31
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 04:34
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 04:38
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 04:41
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 04:44
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 04:50
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 04:53
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 05:01
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 05:07
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 05:21
	Re: Air Bypass Valve	wilbo666	Fri, 11 February 2005 08:48
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 10:26
	Re: Air Bypass Valve	wilbo666	Sat, 12 February 2005 09:10
	Re: Air Bypass Valve	CrUZsida	Sat, 12 February 2005 09:50
	Re: Air Bypass Valve	wilbo666	Sat, 12 February 2005 10:30
	Re: Air Bypass Valve	CrUZsida	Sat, 12 February 2005 10:37
	Re: Air Bypass Valve	wilbo666	Sat, 12 February 2005 11:04
	Re: Air Bypass Valve	86tt	Sat, 12 February 2005 14:51
	Re: Air Bypass Valve	Scorpion	Sun, 13 February 2005 04:12
	Re: Air Bypass Valve	86tt	Sun, 13 February 2005 06:39
	Re: Air Bypass Valve	Scorpion	Sun, 13 February 2005 11:53
	Re: Air Bypass Valve	feral4mr2	Sun, 13 February 2005 12:12
	Re: Air Bypass Valve	86tt	Sun, 13 February 2005 15:01
	Re: Air Bypass Valve	CrUZsida	Fri, 11 February 2005 05:31
	Re: Air Bypass Valve	Danish	Fri, 11 February 2005 05:37
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 05:49
	Re: Air Bypass Valve	Allan	Fri, 11 February 2005 10:19
	Re: Air Bypass Valve	Allan	Fri, 11 February 2005 10:29
	Re: Air Bypass Valve	Scorpion	Fri, 11 February 2005 11:47
	Re: Air Bypass Valve	86tt	Fri, 11 February 2005 12:55
	Re: Air Bypass Valve	Scorpion	Sat, 12 February 2005 06:12
	Re: Air Bypass Valve	sideshow	Fri, 11 February 2005 13:40
	Re: Air Bypass Valve	BansheeBuzz	Sun, 13 February 2005 17:26
	Re: Air Bypass Valve	Allan	Mon, 14 February 2005 00:23
	Re: Air Bypass Valve	86tt	Wed, 16 February 2005 05:00

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