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Unread 09-05-2005, 05:17 PM   #1
mbosco1
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axle vacuum motor tube routing

I'm working on a burned '90 YJ. Currently hung up trying to re-connect the front axle/transfer case vacuum lines. The vacuum motor has two yellow, one black, and one green; the transfer case seems to have one each red, blue, green, and yellow. Don't know how to reconnect them. Please help.

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Unread 09-05-2005, 06:12 PM   #2
wilcox
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it's in the sticky section for vacuum routing
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Unread 09-05-2005, 06:22 PM   #3
oct7brian
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I have some pics I'll post up later there on my other computer. Good luck I have a 90 and did the same thing it had a engine fire as the result of dumping gas down the carb. PM me if you have any questions maybe I can help.
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Unread 09-05-2005, 07:06 PM   #4
mbosco1
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Thanks, (obviously a rookie). Hard to tell from the diagram, what relationship of the black and yellow coming from the shift motor? "Y" connector?
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Unread 09-05-2005, 08:08 PM   #5
oct7brian
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Pic of the vacume system
vacuum-map-wrangler-4x4.gif  
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1998 TJ 4.0 Auto Sahara Package 4" Suspension Lift 33 BFG Hard & Soft Top
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Unread 09-05-2005, 08:09 PM   #6
oct7brian
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Quote:
Originally Posted by mbosco1
Thanks, (obviously a rookie). Hard to tell from the diagram, what relationship of the black and yellow coming from the shift motor? "Y" connector?
When the system is engaged it sends suction to the 4x4 sensor that is mounted on the firewall. This in turn makes the 4wd light go on, on the dash
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Unread 09-05-2005, 08:19 PM   #7
oct7brian
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Here's the CTO diagram
cto-vacume-diagram.jpg  
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Unread 09-05-2005, 11:17 PM   #8
crf250racer
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Quick ?, what do the black hose things do and how do fix a broken 1. Thanx,
Tom
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Unread 09-06-2005, 11:55 AM   #9
oct7brian
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Quote:
Originally Posted by crf250racer
Quick ?, what do the black hose things do and how do fix a broken 1. Thanx,
Tom
What exactly are you refering to? Vacume "t" CTO port. I'm not sure how to answer your question
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Unread 09-06-2005, 02:44 PM   #10
mbosco1
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Quote:
Originally Posted by oct7brian
When the system is engaged it sends suction to the 4x4 sensor that is mounted on the firewall. This in turn makes the 4wd light go on, on the dash

Thanks, Brian. I'll try connecting the red to manifold vacuum, 1st Yellow to yellow from xfer case, 2nd yellow and black together to 4wd light switch, and apparently blue open to vent. Wish me luck.
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Unread 09-06-2005, 04:26 PM   #11
oct7brian
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Sounds like you got it all figured out good luck and let us know how it goes!!
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Unread 09-07-2005, 09:00 PM   #12
crf250racer
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Quote:
Originally Posted by oct7brian
What exactly are you refering to? Vacume "t" CTO port. I'm not sure how to answer your question
Im refering to the black hoses(2 i think) that come out of the vacume thing on the r/t side of the front axle (Central Alxe Disconect?). One of those black hoses got ripped open, j/w what it does and what i need to fix it. It still goes into 4wd and the light comes on in the dash. IDK.

Thanx,
Tom
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Unread 09-09-2005, 05:36 PM   #13
mbosco1
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Quote:
Originally Posted by mbosco1
Thanks, Brian. I'll try connecting the red to manifold vacuum, 1st Yellow to yellow from xfer case, 2nd yellow and black together to 4wd light switch, and apparently blue open to vent. Wish me luck.
Seems to have done the trick.
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