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Unread 09-07-2011, 05:41 PM   #1
markym
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1984 CJ7 
 
Join Date: Apr 2008
Location: rhode island
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4 wheel drive vacum issue

Hi i just bought a 1990 wrangler the 4 wheel drive seems to work but the vacum lines going to the front axle are cut or dry rotted.. so my question is what do they do? thanks

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Unread 09-07-2011, 05:59 PM   #2
dancytron
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1990 YJ Wrangler 
 
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Location: st. louis
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Search CAD or Posilok. There are dozens of threads. Also in FAQ
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Unread 09-07-2011, 06:01 PM   #3
dtn8tr
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1997 TJ Wrangler 
 
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How do you know that the 4WD is working? The vacuum lines engage and disengage the passenger side axle.
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Unread 09-07-2011, 06:06 PM   #4
markym
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well i put in 4 wheel no light came on so i put in 4 wheel low and it was crawling low low gear so asumeed it was working.. do you think i can mend them with vacum lines and be good to go?
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Unread 09-07-2011, 06:09 PM   #5
dancytron
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1990 YJ Wrangler 
 
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Probably. You can use regular black lines from autoparts store.

http://www.jeepforum.com/forum/f12/4...uging-1261215/
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Unread 09-07-2011, 06:17 PM   #6
markym
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1984 CJ7 
 
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so at this point i only have a 3 wheel drive jeep untill i fix my lines??
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Unread 09-07-2011, 06:57 PM   #7
Hillbilly Jeep
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1990 YJ Wrangler 
 
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i had my vaccume lines fall on my exaust and melted like a 4 inch section of all the lines together and what i did was buy black vaccume lines from advance.. cut the bad sections out and use the black lines in place of the melted ones.. used rubber cement and zip ties.. with no problems.. its a quick easy cheap fix
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