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Old 03-25-2012, 02:03 AM   #1
LoveLEE143's Avatar
Join Date: Aug 2011
Location: Fort Lauderdale
Posts: 90
Need Vacuum Help

As I was looking over my Jeep today I noticed some vacuum lines not connected . I looked at a vacuum diagram from the web and I am just as confused as before i began. I have a 1990 wrangler 4.2 with 5 speed.

T his hose is unconnected coming off of the back of the air cleaner housing. What does this connect to?

The top right arrow looks like two hoses should be connected. This comes under the air filter housing. The bottom right arrow is looped into itself is this correct.

Thanks for your help in advance!

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Old 03-25-2012, 11:17 PM   #2
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Bueller, Bueller anyone....

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Old 03-25-2012, 11:33 PM   #3
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Old 03-26-2012, 01:46 AM   #4
Join Date: Aug 2011
Location: north of St.Franisville La.
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Man, I Nutter-by-passed mine and did away with all that crap, it's never ran better, but check your local laws! Search Nutterbypass for YJ Wrangler 4.2, do it, it works!
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Old 03-26-2012, 08:53 PM   #5
Join Date: Aug 2010
Location: Chelsea
Posts: 42
If the Jeep is running well I would not worry about it. This era of Jeep used Vac lines to do lots of secondary things related to the emissions etc. If you are having trouble then I would consider converting to a new carb and doing the Nutter bypass. Have fun!
Ben B.
Chelsea, MI
1990 Jeep YJ - 4.2 - manual
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