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What does this thingamajig do? #808810 04/30/07 06:11 AM
Joined: Nov 2001
Posts: 307
Prince George, BC, Canada
P
Poor A$$ Stock '93 Offline OP
Mudrunner
I just replaced my power steering pump today. Sure is nice to have that back. Anyway when I was in there I noticed that the little plastic pod on the bottom that has a couple vacuum lines off of it was broken. The plastic nipples for the lines were broken off. Steering seems to work fine again with out it so I was wondering what this piece does?

North Caribou Offroad Adventurers Society
www.offroad.bc.ca
Re: What does this thingamajig do? [Re: Poor A$$ Stock '93] #808811 04/30/07 07:36 AM
Joined: May 2006
Posts: 457
Northern Calif
D
Davepet Offline
Mudrunner
A picture would be helpful, but sounds like it might be a pressure switch that bumps up the idle a bit when the power steering pressure gets above a set value.
Re: What does this thingamajig do? [Re: Poor A$$ Stock '93] #808812 04/30/07 01:03 PM
Joined: Aug 2006
Posts: 49
INDIANA
Peli Offline
Getting the Wheeling Fever
that is a vacuum switch that idles up the motor when turning the wheel just make sure the lines are capped or they will suck in crap into your intake

1989 toyota 4runner 5speed 4" lift
Re: What does this thingamajig do? [Re: Peli] #808813 04/30/07 04:30 PM
Joined: Oct 2000
Posts: 669
Austin,TX
D
dcg9381 Offline
Rock Warrior
Anyone know the correct threads to cap this thing with?

22REturbo.net




1988 4Runner
22RTE core, turbocharged, megasquirted...
Re: What does this thingamajig do? [Re: dcg9381] #808814 04/30/07 05:29 PM
Joined: Nov 2003
Posts: 268
Htown, TX
1
1FastSS Offline
Mudrunner
Just RTV over the vacuum lines and away you go.....unless it's a show truck, then pull the switch and go get a brass plug..... <img src="/forums/images/graemlins/smile.gif" alt="" />

- Daily Driver - 2004 Corolla
- Off Road - 1992 Pickup SR5 3.0L 4x4
- Fun - 2001 Camaro SS (320 RWHP/330 RWTQ)
http://community.webshots.com/user/1fastss
Re: What does this thingamajig do? [Re: Peli] #808815 05/01/07 02:55 PM
Joined: Apr 2000
Posts: 4,230
Roseville, CA, Gateway to the ...
OOP'S Offline
Roll Me Over
Quote
that is a vacuum switch that idles up the motor when turning the wheel just make sure the lines are capped or they will suck in crap into your intake
I would be more worried about the engine running rough and burning valves then sucking crap into the engine.

It is an "idle up" valve for when the PS is working hard like at lock so the engine will not die. I found where the two lines go into the intake. I removed one and looped the other into it place. As far as a plug, I had to plug off the valve hole. I tried the RTV but mine was leaking fluid so I removed it, broke the plastic off, and brazed up the hole. If you do not have access to a find a metric thread brass plug for it. Do not try a metric bolt, it is a metric tapered pipe thread.

David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA

"Serenity through Sobriety"
Re: What does this thingamajig do? [Re: OOP'S] #808816 05/01/07 07:07 PM
Joined: Nov 2003
Posts: 268
Htown, TX
1
1FastSS Offline
Mudrunner
Quote
Quote
that is a vacuum switch that idles up the motor when turning the wheel just make sure the lines are capped or they will suck in crap into your intake
I would be more worried about the engine running rough and burning valves then sucking crap into the engine.

It is an "idle up" valve for when the PS is working hard like at lock so the engine will not die. I found where the two lines go into the intake. I removed one and looped the other into it place. As far as a plug, I had to plug off the valve hole. I tried the RTV but mine was leaking fluid so I removed it, broke the plastic off, and brazed up the hole. If you do not have access to a find a metric thread brass plug for it. Do not try a metric bolt, it is a metric tapered pipe thread.


I would plug the 2 lines in the manifold. If you loop one to the other, won't it be on high idle since the line will be open?

- Daily Driver - 2004 Corolla
- Off Road - 1992 Pickup SR5 3.0L 4x4
- Fun - 2001 Camaro SS (320 RWHP/330 RWTQ)
http://community.webshots.com/user/1fastss
Re: What does this thingamajig do? [Re: 1FastSS] #808817 05/01/07 07:20 PM
Joined: Jan 2000
Posts: 12,153
N. California. USA
4Crawler Offline
Web Wheeler
*****
Yep, you need to cap the un-used lines:

[Linked Image]

If looped (and not plugged) the vacuum at the idle up valve will open it and bump up the idle speed (that is a good way to test the idle up valve BTW):

http://www.4crawler.com/4x4/CheapTricks/22RE_Engine_Pix/index.html

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code

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