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XJ Ask the Question Thread
03-12-2014, 09:33 PM
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Join Date: Apr 2012
Location: Huntsville, Tn
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Year: Different Years (I have several XJ's)
Model: Cherokee
Engine: 4.0 HO
I'm gonna be doing the 99+ intake swap on my 98 this weekend. Has anybody here done it? If so, do you have pics or a very good explanation of where all the vacuum lines connect? I only ask cuz the newer intake has less ports on it. I know I'm gonna need to lengthen the wires for the sensor but am clueless on the vac lines. Possibly a parts list? Any help would greatly be appreciated!
03-12-2014, 09:57 PM
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Join Date: Sep 2011
Location: Muncie, Indiana
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Year: 1998
Model: Cherokee
Engine: 4.0
Everyone I found never really explained much on vac lines besides "they had to extend one"
03-12-2014, 10:36 PM
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Join Date: Dec 2013
Location: Washington
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Year: 2001
Model: Cherokee
Engine: Power Tech 4.0l Inline 6
Probably just need a bulb for the rear turn signal. Does it work when you use your hazards. And reverse light may be NSS. HAve someone stand many feet away behind the jeep and with your foot on the brake, cycle through the gears from top to bottom several times and then firmly into R. Probably have to clean it though
03-13-2014, 04:33 AM
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Location: Mercer County, NJ
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
The NSS is the Neutral Safety Switch. Do a search on the write ups. When this starts to go bad it affects the reverse lights and a couple of other issues. As for the blinker. Open the housing and inspect the wiring. If you have a meter, see if you get 12v or any voltage at the socket.
03-13-2014, 06:04 AM
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
03-13-2014, 06:11 AM
Herp Derp Jerp
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Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
It's basically a rubber diaphragm. All it does is absorb the shockwave in the fluid when an injector closes, an bends so there isn't as much of a drop when one opens. You can look up this concept elsewhere as I don't feel like tapping it out on my phone lol.
Anyway it reduces pressure "flutter". It is the reason that the 2000+ XJs specify 49 +/-1.5 PSI vs the older 49 +/-5 PSI. In theory this gives more even fuel delivery.
03-13-2014, 06:11 AM
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
I have the ZJ tie rod already. draglink TRE is beyond the repair of greasing it seems. clunking in cold weather bad. might as well just replace it finally. I heard the ZJ drag link is the same as XJ???
Thanks BTW for being awake like us non normal people
Ok I see now. I was looking at Es3095. The 3096 says its for the pitman arm. Would this one fit the stock draglink. you said no?
Last edited by sycoglitch; 03-13-2014 at 06:16 AM.
03-13-2014, 06:15 AM
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Year: 1999
Engine: 4.0
The one in the middle with no vacuum hoses is called a fuel rail dampener. Chrysler added this officially for the 2000 model year but my early build '99 had one too It's basically a rubber diaphragm. All it does is absorb the shockwave in the fluid when an injector closes, an bends so there isn't as much of a drop when one opens. You can look up this concept elsewhere as I don't feel like tapping it out on my phone lol. Anyway it reduces pressure "flutter". It is the reason that the 2000+ XJs specify 49 +/-1.5 PSI vs the older 49 +/-5 PSI. In theory this gives more even fuel delivery.
It's basically a rubber diaphragm. All it does is absorb the shockwave in the fluid when an injector closes, an bends so there isn't as much of a drop when one opens. You can look up this concept elsewhere as I don't feel like tapping it out on my phone lol. Anyway it reduces pressure "flutter". It is the reason that the 2000+ XJs specify 49 +/-1.5 PSI vs the older 49 +/-5 PSI. In theory this gives more even fuel delivery.Since If it ever went bad, what brand is considered good replacement? Mopar?
03-13-2014, 06:22 AM
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
I have the ZJ tie rod already. draglink TRE is beyond the repair of greasing it seems. clunking in cold weather bad. might as well just replace it finally. I heard the ZJ drag link is the same as XJ???
Thanks BTW for being awake like us non normal people
Ok I see now. I was looking at Es3095. The 3096 says its for the pitman arm. Would this one fit the stock draglink. you said no?
And the ZJ drag link is ALMOST the same as the XJ. It's like half an inch longer according to Moog's specs.
03-13-2014, 06:25 AM
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
As far as I'm aware there's no aftermarket replacement for XJs. According to the FSM and parts book the fuel rail is "non-serviceable" and you're supposed to replace the whole thing. Of course flip it over and there's a lock ring to take it out... If it leaks maybe the JY will have one for you. I think WJs had em too
03-13-2014, 06:42 AM
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
I saw it. I read the descriptions wrong lol. And yea i read where some ppl have issues with the zj drag link cause its too long
03-13-2014, 06:44 AM
Herp Derp Jerp
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
03-13-2014, 06:50 AM
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Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
03-13-2014, 11:55 AM
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Year: 2001
Model: Cherokee
Engine: Power Tech 4.0l Inline 6
The NSS is the Neutral Safety Switch. Do a search on the write ups. When this starts to go bad it affects the reverse lights and a couple of other issues. As for the blinker. Open the housing and inspect the wiring. If you have a meter, see if you get 12v or any voltage at the socket.