Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
Old Sep 21, 2015, 03:49 PM
How-Tos on this Topic
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: General Overview
Print Wikipost

XJ Ask the Question Thread

Thread Tools
 
Search this Thread
 
Old Sep 14, 2012 | 12:41 AM
  #14536  
94XjSport94's Avatar
CF Veteran
 
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
Default

Originally Posted by Nicks90xj
ok this is a stupid question but just want to make sure. i installed my 4.5 lift today and the front axle sits towards the firewall a bit. i assume the alignment will fix that? just the caster adjustment right?
Need longer LCA's unless your lift came with em... Caster wont move it that much i dont think
Old Sep 14, 2012 | 12:48 AM
  #14537  
Nicks90xj's Avatar
Member
 
Joined: Sep 2012
Posts: 148
Likes: 1
From: loma linda
Year: 90
Model: Cherokee
Engine: 4.0 with Bomb proof mounts
Default

Originally Posted by 94XjSport94
Need longer LCA's unless your lift came with em... Caster wont move it that much i dont think
Yes the kit came with LCA's. i was thinking i need drop brackets but the kit i got had everything needed (so said) . But ive talked to people and seen a guy with same kit and looks fine. mabe springs need to seat? I can take pics tomarrow to dark now.
Old Sep 14, 2012 | 08:13 AM
  #14538  
dukie564's Avatar
☠ CF Sheriff ☠
Premium Member
 
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
Default

Originally Posted by TXDESSI
Figured out how to insert the diagram. What do you think (see questions above)?
Looks good. Added some wire sizes for you. Those are the minimum sizes you need assuming the lights you have are all 55W lights.

Name:  fcfdfc30.jpg
Views: 45
Size:  69.3 KB
Old Sep 14, 2012 | 08:45 AM
  #14539  
a_shirey's Avatar
CF Veteran
 
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
Default

i have a small amount of driveline vibrations as stated before. my lift has settled a lot and they are way less. my rear u joint was a little mangled during the lift install and isnt seated right. if i get a new ujoint installed should i still need an SYE? or is this a try it and find out thing?
Old Sep 14, 2012 | 09:19 AM
  #14540  
bhennessee1's Avatar
CF Veteran
10 Year Member
 
Joined: Apr 2011
Posts: 3,493
Likes: 0
From: Chickamauga Ga.
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by dukie564

Looks good. Added some wire sizes for you. Those are the minimum sizes you need assuming the lights you have are all 55W lights.
I just run them all in 12 and just have to buy one roll of wire.
Old Sep 14, 2012 | 09:20 AM
  #14541  
bhennessee1's Avatar
CF Veteran
10 Year Member
 
Joined: Apr 2011
Posts: 3,493
Likes: 0
From: Chickamauga Ga.
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by a_shirey
i have a small amount of driveline vibrations as stated before. my lift has settled a lot and they are way less. my rear u joint was a little mangled during the lift install and isnt seated right. if i get a new ujoint installed should i still need an SYE? or is this a try it and find out thing?
That's a try it and find out kind of thing.
Old Sep 14, 2012 | 09:21 AM
  #14542  
a_shirey's Avatar
CF Veteran
 
Joined: Jan 2012
Posts: 8,272
Likes: 1
From: Baltimore, MD
Year: 1999
Model: Cherokee
Engine: 4.0 I6 HO
Default

Originally Posted by bhennessee1

That's a try it and find out kind of thing.
thanks.
Old Sep 14, 2012 | 11:24 AM
  #14543  
Sails's Avatar
Member
 
Joined: Jun 2012
Posts: 138
Likes: 0
From: Central Frontenac, ON Canada
Year: 2001
Model: Cherokee
Engine: 4.0
Default P0303

I had my CEL come on a month ago and it was a P0303, misfire cylinder 3, I cleared the code and didn't really think anything of it. Jeep ran good, milegae was good, just a little rough on the idle but nothing to really speak of and the CEL didn't come back.
Then I got a new toy, bluetooth OBD reader, so now I can look at codes and the engine a little more real time on my computer and discovered that the engine is throwing the 03 misfire code all the time. I guess that it doesn't do it enough to trigger the CEL circuit, there must be some tolerance in the programming.
So I used the search function here and have a list of things to check and do;

Check wiring harness for breaks and grounding.

Change spark plugs, NGKs since I have an 01, gap .035. Anti seize and diaelectric grease.

Inspect boots and change if required.

Am I missing anything and is are there any gotchas that I should be careful about?

Thanks for the help!!
Old Sep 14, 2012 | 01:05 PM
  #14544  
DieselD's Avatar
CF Veteran
 
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Default

Sounds about right.
Old Sep 14, 2012 | 01:41 PM
  #14545  
94xjohio's Avatar
Senior Member
 
Joined: Jun 2012
Posts: 634
Likes: 0
From: Cuyahoga Falls
Year: 1994
Model: Cherokee
Engine: 4.0l
Default

Originally Posted by Sails
I had my CEL come on a month ago and it was a P0303, misfire cylinder 3, I cleared the code and didn't really think anything of it. Jeep ran good, milegae was good, just a little rough on the idle but nothing to really speak of and the CEL didn't come back.
Then I got a new toy, bluetooth OBD reader, so now I can look at codes and the engine a little more real time on my computer and discovered that the engine is throwing the 03 misfire code all the time. I guess that it doesn't do it enough to trigger the CEL circuit, there must be some tolerance in the programming.
So I used the search function here and have a list of things to check and do;

Check wiring harness for breaks and grounding.

Change spark plugs, NGKs since I have an 01, gap .035. Anti seize and diaelectric grease.

Inspect boots and change if required.

Am I missing anything and is are there any gotchas that I should be careful about?

Thanks for the help!!
Check over the entire ignition system, dist cap, contacts all of it. Had same thing w my blazer, end up being cap and rotor
Old Sep 14, 2012 | 02:07 PM
  #14546  
DieselD's Avatar
CF Veteran
 
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Default

If its an 01 I don't think he has cap and rotor. I almost said the same thing lol...
Old Sep 14, 2012 | 02:07 PM
  #14547  
salad's Avatar
Herp Derp Jerp
Premium Member
 
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Originally Posted by 94xjohio
Check over the entire ignition system, dist cap, contacts all of it. Had same thing w my blazer, end up being cap and rotor
Might have trouble find a distributor cap on a 2001...

Sails, since you did plugs already, the next steps are to move the coil packs to other cylinders and see if the misfire follows. If not I'd dry fuel injectors as well. Then a compression test
Old Sep 14, 2012 | 02:42 PM
  #14548  
Sails's Avatar
Member
 
Joined: Jun 2012
Posts: 138
Likes: 0
From: Central Frontenac, ON Canada
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Originally Posted by salad
Might have trouble find a distributor cap on a 2001...

Sails, since you did plugs already, the next steps are to move the coil packs to other cylinders and see if the misfire follows. If not I'd dry fuel injectors as well. Then a compression test
Actually I haven't done anything yet, I am hopeful that it will turn out to be a wiring rub and will change the plugs just because I should.
I will keep in mind your suggestion about moving the packs around if I don't find it with the plugs and wiring, excellent idea rather than throwing parts at it. Same with the injectors if it comes to that.
I am a little confused as to how a compression test or low compression would contribute to a misfire. I would think that the misfire code would relate to the pack/plug/wiring issue. I agree that low compression could lead to the roughish idle and lossy performance and lossy mileage neither of which I have.
Enlightenment would be appreciated!
Thanks and I wasn't really going to look for a cap & points ...
Old Sep 14, 2012 | 02:56 PM
  #14549  
salad's Avatar
Herp Derp Jerp
Premium Member
 
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Originally Posted by Sails
Actually I haven't done anything yet, I am hopeful that it will turn out to be a wiring rub and will change the plugs just because I should.
I will keep in mind your suggestion about moving the packs around if I don't find it with the plugs and wiring, excellent idea rather than throwing parts at it. Same with the injectors if it comes to that.
I am a little confused as to how a compression test or low compression would contribute to a misfire. I would think that the misfire code would relate to the pack/plug/wiring issue. I agree that low compression could lead to the roughish idle and lossy performance and lossy mileage neither of which I have.
Enlightenment would be appreciated!
Thanks and I wasn't really going to look for a cap & points ...
Ah haven't done plugs yet... NGK ZFR5N are $7.09/pr at PartSource and Canadian Tire, PartSource has Permatex copper antiseize (higher temp than silver) on sale this month. For the top of the plugs themselves I recommend a product like Gardner bender OX-GARD, it's a semi-conductive grease that's appropriate for electrical connections. Dielectric is still a good idea to put on the plug boots, however it is an insulating grease and can actually cause problems on connectors if they don't make good contact. I've used other electric grease (Sanchem NO-OX I got through work) to restore function on corroded connectors.

Regarding what throws a misfire code, there's another thread somewhere around here where that was discussed. Misfires are determined by reading the signal from the CPS. The ECU expects a certain amount of push every time a cylinder is fired, equating to an increase in the rotational speed of the flywheel. It measures the average of each cylinder and throws a code if it's uneven. Anything that causes a less powerful explosion in a cylinder will throw a code, like burnt valve, missing seals, lots of oil, bad rings, bad gas, no gas, too much gas, bad spark... blah blah blah

An additional question for you - any odd noises from the engine itself? I've been spending a lot of time reading about sticky lifters on the 4.0 which will result in the valves not opening properly
Old Sep 14, 2012 | 03:25 PM
  #14550  
94xjohio's Avatar
Senior Member
 
Joined: Jun 2012
Posts: 634
Likes: 0
From: Cuyahoga Falls
Year: 1994
Model: Cherokee
Engine: 4.0l
Default

Yeah didn't know the o1 had cool packs, what yr did they switch over.

Also check plugs if that #3 cylinder looks diff then the others could have a mechanical issue



All times are GMT -5. The time now is 10:45 AM.