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XJ Ask the Question Thread
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
Joined: Feb 2012
Posts: 6,468
Likes: 18
From: Forest Hill, Maryland
Year: 1998
Model: Cherokee
Engine: 4.0L
Member
Joined: Jul 2010
Posts: 103
Likes: 0
From: Georgia
Year: 1988
Model: Cherokee
Engine: 4.0L HO from a 91 Comanche.
I bought mine with a rod knock, drove it 10k miles that way,I put 85-140 weight in the crank case, lots of people think I'm nuts or don't believe me, but it worked, summer only though.
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
How much should my voltage drop with my AC running? I usually have the fan on 4. its a 99.
I just ask because my defrost does the same thing when the fans on 4. I'm wondering if I should get the 130a alt and upgrade my cables.
I just ask because my defrost does the same thing when the fans on 4. I'm wondering if I should get the 130a alt and upgrade my cables.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Junior Member
Joined: Mar 2012
Posts: 42
Likes: 0
From: Grand Rapids, MI
Year: 2000
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Although I think the distributer-less models started in 99, also in 99+ they started doing the pre-cats.
I guess I should read all the posts first....seems this was answered multiple times. Dang! just when I thought I had some good info to add.
Last edited by donkeypunch; May 16, 2013 at 09:17 AM.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
I love my precats. I believe 01s have dual precat and 00 have single. I didn't get a chance to climb under mines yet but I hope I dont have 6 o2.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
2000 model year started assembly in mid-late 1999. California emissions package included 2 mini cats, 1 main cat, and 4 O2 sensors (around the mini cats).
+1 look at cable replacement. The XJ's electrical system is so undersized its not funny. Another fantastic aspect of cable corrosion is that it will continue past the visible area, creeping up into the jacketing. Broken and corroded conductors in a stranded cable reduce it's capacity.
+1 look at cable replacement. The XJ's electrical system is so undersized its not funny. Another fantastic aspect of cable corrosion is that it will continue past the visible area, creeping up into the jacketing. Broken and corroded conductors in a stranded cable reduce it's capacity.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
OK. So that's why you say cables no matter what wait on the alt because crappy cables could be draining my power. Make sense.
I need to put some funds on a Walmart money card.... lol
I need to put some funds on a Walmart money card.... lol
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO




