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Unread 07-25-2007, 09:27 PM   #1
ElvisV04290
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1990 YJ Wrangler 
 
Join Date: Mar 2006
Location: Macomb, Illinois
Posts: 1,329
Front axle vacuum disconnect interrupt idea, will it work?

My front axle disconnect is still the stock vacuum disconnect setup. I was thinking, what if I took one of my old vacuum switches (from the pulse air system control on the valve cover) and put it in line with the vacuum pulled off the manifold for the 4wd system. This way, I could turn off (close) the switch and not allow vacuum to reach the transfer case. Then if I were to shift into 4 low, it would really be 2 low since the front axle shift fork will not move. Think this would work? And can the vacuum switch take 12 volts? or will I need to find a place that has lower voltage to pull from?

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1990 YJ, Colorado Red with 'Laredo' markings, 4.2L, TF999, NP231, Valvoline Syn fluids, Weber 32/36, Nutter Bypass, Dana 30/35, 16" Electric Fan, Optima Yellow Top, 140amp alt., K&N Air Filter, Cherry Bomb muffler, SRC Front Bumper, CH&F Shackles, KC 100w Daylighters, Homemade Lightbar, Rear Aux lights, Cobra CB/PA/WX, 102" Whip Ant., 400 watt power inverter, 2 fire extinguishers, Mobile Internet & WiFi equipped.
Daily Driver since April 23rd, 2003

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Unread 07-25-2007, 09:51 PM   #2
goatboy
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1989 YJ Wrangler 
 
Join Date: Feb 2007
Location: Fillmore, California
Posts: 2,449
Sounds good, but I'm wonderin' why you wouldn't wanna pony up for a PosiLock and not only have something which will do just that, but will also eliminate a source of problems...sure, I realize that it's expensive, but it's also a dependable, well built piece...
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Unread 07-25-2007, 09:58 PM   #3
ElvisV04290
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1990 YJ Wrangler 
 
Join Date: Mar 2006
Location: Macomb, Illinois
Posts: 1,329
I just replaced everything on my disconnect system last year, it's all new and working great. So why replace that all again so soon? And I already have the switch, so it's not like I'm spending any money, just some of my time.
__________________
1990 YJ, Colorado Red with 'Laredo' markings, 4.2L, TF999, NP231, Valvoline Syn fluids, Weber 32/36, Nutter Bypass, Dana 30/35, 16" Electric Fan, Optima Yellow Top, 140amp alt., K&N Air Filter, Cherry Bomb muffler, SRC Front Bumper, CH&F Shackles, KC 100w Daylighters, Homemade Lightbar, Rear Aux lights, Cobra CB/PA/WX, 102" Whip Ant., 400 watt power inverter, 2 fire extinguishers, Mobile Internet & WiFi equipped.
Daily Driver since April 23rd, 2003

Northern Illinois Extreme Jeep Club Member www.extremejeepclub.com
Weber 32/36 Install -> http://www.jeepforum.com/forum/showthread.php?t=382309
Early YJ Club Member #37
For anyone with a 4.2L --> http://groups.jeepforum.com/258s_Unite
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Unread 07-25-2007, 10:07 PM   #4
oldballz
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2011 JK Wrangler 
 
Join Date: Jul 2007
Location: Farmington, New Mexico
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i agree with goatboy the posilock is a great piece of gear. i just recently installed one and a cast shift fork, took just over an hour. its quick easy and painless, plus you can run 2Low if you needed to.
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Unread 07-25-2007, 10:18 PM   #5
ElvisV04290
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1990 YJ Wrangler 
 
Join Date: Mar 2006
Location: Macomb, Illinois
Posts: 1,329
You are missing the point, I asked if this could be done, not if there is a better option. I'll just do it and if worse comes to worse I'll fry a vacuum switch in the process.
__________________
1990 YJ, Colorado Red with 'Laredo' markings, 4.2L, TF999, NP231, Valvoline Syn fluids, Weber 32/36, Nutter Bypass, Dana 30/35, 16" Electric Fan, Optima Yellow Top, 140amp alt., K&N Air Filter, Cherry Bomb muffler, SRC Front Bumper, CH&F Shackles, KC 100w Daylighters, Homemade Lightbar, Rear Aux lights, Cobra CB/PA/WX, 102" Whip Ant., 400 watt power inverter, 2 fire extinguishers, Mobile Internet & WiFi equipped.
Daily Driver since April 23rd, 2003

Northern Illinois Extreme Jeep Club Member www.extremejeepclub.com
Weber 32/36 Install -> http://www.jeepforum.com/forum/showthread.php?t=382309
Early YJ Club Member #37
For anyone with a 4.2L --> http://groups.jeepforum.com/258s_Unite
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Unread 07-25-2007, 10:20 PM   #6
goatboy
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1989 YJ Wrangler 
 
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Location: Fillmore, California
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Please accept my apologies for pooin' in your mess kit...rest assured I will not go there again...
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