1990 YJ 4.2 Firewall vacuum lines - JeepForum.com
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Unread 07-14-2013, 08:25 PM   #1
desotojohn
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1990 YJ Wrangler 
 
Join Date: Aug 2010
Location: Socal, CA
Posts: 2
1990 YJ 4.2 Firewall vacuum lines

On the drivers side near the brake booster are 2 vacuum that pass thru the firewall. Does anyone know what they are and where they are supposed to connect to?

Also, in the center of the firewall is a black vacuum line with a strange red fitting on it. Does anyone know what it is and where it is supposed to connect to?

Thanks

John

vacuum-lines.jpg   4wd-firewall.jpg  
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Unread 07-14-2013, 08:36 PM   #2
dancytron
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1990 YJ Wrangler 
 
Join Date: Jun 2008
Location: st. louis
Posts: 1,280
I think the bottom picture is the vacuum line that goes to the heater doors.

I could be wrong, but I think the first picture is the lines that go to the squirter. I'll look tomorrow when its light outside to make sure.
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Unread 07-15-2013, 04:48 AM   #3
rubisean
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1990 YJ Wrangler 
 
Join Date: Mar 2012
Location: wesley chapel, fl
Posts: 209
the larger one is squirter for sure
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Unread 07-15-2013, 04:50 AM   #4
superj
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1987 YJ Wrangler 
 
Join Date: Mar 2008
Location: corpus christi, texas
Posts: 6,530
the second one goes on that nipple in the bottom of the picture that is behind the hose.
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