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Idle up switch on power steering

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Old 10-28-2010, 04:00 PM
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Idle up switch on power steering

Ok so I read through a couple other posts about this but I wanted to be sure before I did anything. My old power steering pump was shot and when ever I put fluid in it, it would smoke out the exhaust pretty good. Eventually it would all be gone and when I stopped putting fluid in it, it wouldn't smoke at all anymore. Well I put the new pump on and it's a hell of a lot better (no more screaming or noise) but it still smokes and the fluid is disappearing. I've been told that I need that idle up switch and I've read on here that its useless. Just lookin for some clarification on this. Thanks in advance for any info.
Old 10-28-2010, 04:28 PM
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It's the idle air control valve. I don't think you need it, maybe if it was working. Which it doesn't sound like it is.

The one on mine doesn't seem to work either. But it's not leaking fluid into the plenum chamber like yours is, so it's still connected to the pump on mine. In case it ever decides to work some day.

Other than that I'd just pull it out and screw a cap in the hole. Is that what you were thinking too? Or maybe replacing it with a new one?
Old 10-28-2010, 04:45 PM
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Yeah taking it off and screwin in a cap is my plan as of right now. What should I do about the lines? Just cap em off too?
Old 10-28-2010, 04:52 PM
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Definitely cap those too.
Old 10-28-2010, 04:55 PM
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Thanks I appreciate the info
Old 10-28-2010, 05:10 PM
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Even though the PS idle-up definitely controls idle, I think it's just called the Air Control Valve. I think the Idle Air Control (IAC) Valve is something else.

What ever it is called, I'm glad I have mine. It's purpose it to nudge up the idle a bit when you're cranking on the steering. Otherwise, you'd kill the engine while you were parallel parking. Of course, you can obviate that by setting the idle a little high. Or avoiding parallel parking. You're probably doing one of those now with your bad valve.

IF the rest of the idle-up plumbing is working, you can just plug the two hoses. If it isn't working anyway, it might not matter what you do. A common problem (at least it was with mine, and I've heard about it from others) is that the plenum (upper intake manifold) gets so choked with gunk that the ports for the idle up are blocked. Which means they don't function. (And if that is your situation, you ought to think about cleaning the plenum; other bad things are following.)
Old 10-28-2010, 05:31 PM
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It's definitely not that last part about the intake, I replaced the gaskets last year when I did the injectors and I cleaned that thing so it was like new, but thanks for the info, I'm gonna cap that thing off tomorrow and see what happens
Old 10-28-2010, 08:12 PM
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Originally Posted by scope103
Even though the PS idle-up definitely controls idle, I think it's just called the Air Control Valve. I think the Idle Air Control (IAC) Valve is something else.

What ever it is called, I'm glad I have mine. It's purpose it to nudge up the idle a bit when you're cranking on the steering. Otherwise, you'd kill the engine while you were parallel parking. Of course, you can obviate that by setting the idle a little high. Or avoiding parallel parking. You're probably doing one of those now with your bad valve.

IF the rest of the idle-up plumbing is working, you can just plug the two hoses. If it isn't working anyway, it might not matter what you do. A common problem (at least it was with mine, and I've heard about it from others) is that the plenum (upper intake manifold) gets so choked with gunk that the ports for the idle up are blocked. Which means they don't function. (And if that is your situation, you ought to think about cleaning the plenum; other bad things are following.
I think you're talking about an ISCV(Idle Speed Control Valve). It's not the same system as this one. The 3VZE has a wax type auxillary air valve/ISCV that opens and closes in response to coolant temperature.
See pages 1 & 8 from the link below.

http://www.autoshop101.com/forms/h21.pdf



This one is also called the air flow control valve. See page 12 from the same link. http://www.autoshop101.com/forms/h21.pdf


It's setup to draw air into the system from the hose in the intake silencer. Depending on the pressure in the vane pump. When the pressure is high, it opens and lets that air into the plenum through the hose connected to it. That's what raises the idle speed. You can just rev the engine to make the pump work harder when turning a t low speeds and it's actually more effective, but I guess you'd need a manual tranny too.
Old 10-28-2010, 08:50 PM
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You can plug the valve with like a metric hex head bolt fine thread i think, i forget the size exactely but it is a bolt thread, ive went through so much power steering fluid, this fixed my problem,
Old 10-31-2010, 03:37 PM
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I picked up a plug/cap thing from ace hardware and wrapped it with thread tape and stuck it in there. It's holding great, no more leaking. I plugged the vacuum lines runnin there too. The only thing is, it's whining a little bit and actin goofy, not sure if it's normal since it's a new pump and I'm blocking that off but regaurdless I'm happy it's not leaking and sucking it into the motor
Old 12-07-2012, 04:32 AM
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did you ever get it to stop smoking? i think ive got the same issue. ive got a 90 too, but with the 22re. i cant get this smoke to stop man
Old 12-07-2012, 12:28 PM
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Do people even read threads these days, before posting in them?
Old 12-08-2012, 03:55 PM
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yeah i read it. i was just asking because i did it and im still smoking, and he never said if it fixed his smoking problem. no need to be rude man.
Old 12-08-2012, 04:08 PM
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I plugged the holes on the power steering and the intake a long time ago becuase ps fluid was getting into my intake. The idle speed does dip a tad when cranking the wheels, but its never died because of it. Only time I have ever noticed the power steering acting weak is if the rpms dip below 700rpms, or about to stall. Which on the veezee only happens with a manual trans. The auto trans never stalls, unless its broken.
Old 12-08-2012, 04:15 PM
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Also, the vent hose going from your driver side valve cover to your intake hose. I put a pcv filter on mine and the pleneum has stayed clean since. And yes my pcv valve has been replaced twice. But before that I had cleaned it a few times only to see more oily goo in there later on. The 2 things I know are to blam are that hose I described and the power steering air idler upper gizmo. Since I fixed those its been squeaky clean inside for the last 2 years.

Side note, I actually had ps fluid pour out of one hose when I pulled it off the ps unit.

Last edited by ThatGuy1295; 12-08-2012 at 04:17 PM.
Old 12-08-2012, 06:38 PM
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yeah i guess that wasnt my issue, since im still smoking. i guess its some kind of fuel issue. maybe my o2 sensor. idk. but thanks!
Old 12-08-2012, 08:04 PM
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yeah i guess that wasnt my issue, since im still smoking. i guess its some kind of fuel issue. maybe my o2 sensor. idk. but thanks!
Fuel issue causing smoking....?????? never heard of one
Unless your about to burst into flames.
Old 12-09-2012, 08:03 AM
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i know. i havent either. but this smells like straight fuel.
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