Hello fellow forum members,

You gave me some good advice last year, so I like to ask some questions about vacuum lines. Jeep Cherokee 4.0 XJ 1992.
Last year I had big problems with O2 sensor and exhaust manifold. I disassembled the exhaust manifold, but did not have time to rebuild due to renovation works at home.
Today I finished rebuilding after 9 months. Although I made photos prior to disassembly, I can't find how to connect some vacuum lines.
I searched online, but most videos are from other models.
I tried to explain on photos, sorry for so many questions. Hope you can help!
Photo 1 - Line on inlet manifold, where does it go to?

photo 2, where does this line go to?

this line goes to the left, where to?
Photo 3, this line goes into throttle body, just like this?

Photo 4;

From the wire harnas near fire board I have this line, where to connect?
Photo 4

where does this part come? Where to connect the 2 lines?

This device is connected to the throttle body, where to connect both lines?

Where does this part come?

Many thanks in advance!!!

 

Without quoting your post (it would require a lot of scrolling), I'll try to answer as best as I can.

Photo 1: The vacuum port likely goes to the fuel pressure regulator in Photo 2.

Photo 2: See connect to the port on Photo 1.

Photo 3: This is the vacuum connection for the MAP sensor located on the firewall.

Photo 4 (1st one): No idea, where does the other end connect? Also, the CCV port on the valve cover doesn't look right.

Photo 4 (2nd one): That's the transducer from the EGR. Where did that come from? This was on Renix era XJs.

Photo 5: That's the EGR valve. The transducer plugs into that. The "curved" tube on the EGR goes into the bottom of the transducer (center post), then the curved hose on the transducer goes on the other port on the EGR. Again, this looks like a Renix (1987-1990) exhaust manifold. That big port just above is for the Power brake booster.

Last photo (not numbered) is a standoff for the engine harness that runs along the valve cover. They keep the harness off the engine. There are usually 3 of them. Three of the Valve cover bolts have extensions on them. Those standoffs, simply push on the extensions. The harness then just clips in.


Edit:
So after looking at your past posts, you appear to have a 1990 XJ. You first post in this thread says 1992. Just wanna make sure what year it is to make sure we give you the right info.

 

Thx so much, will work on it tomorrow again.