Sep 21, 2015, 03:49 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: General Overview
- Jeep Grand Cherokee WJ 1999 to 2004 Crash Test and Safety Ratings
Important Information to help you understand your Jeep Grand Cherokee.
Browse all: General Overview
XJ Ask the Question Thread
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Rock auto is great. I assume since the NGK plugs there are only listed as copper that's what I should get? That's what I've always bought, copper. I don't even know how i got to plugs when I was talking about o2s. Guess I'll find those first.
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
For anyone who searches
99 Cherokee 4.0 o2 sensors
NTK #23151 (Upstream)
NTK #23099 (Downstream)
EDIT: Also rock auto seems to have the best deal.
99 Cherokee 4.0 o2 sensors
NTK #23151 (Upstream)
NTK #23099 (Downstream)
EDIT: Also rock auto seems to have the best deal.
Last edited by DieselD; May 21, 2013 at 08:57 AM.
Senior Member
Joined: Nov 2012
Posts: 521
Likes: 0
From: Oregon
Year: 1996
Model: Cherokee
Engine: 4.0
Ok that makes sense. Im picking up a new one as soon as oreillys opens. Thanks for the help. Lol sometimes simple things manage to confuse me alot.
Member
Joined: Jun 2012
Posts: 136
Likes: 1
Model: Cherokee
I'm getting ready to order a lift kit finally and I was wondering, what is the purpose of doing a long arm upgrade? Do I have to? And if so, at what height do I need to upgrade? I'm looking at a rc 3" aal with a 2" budget boost.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
And long iirc is for either 4.5" and up but someone can correct me if I'm wrong
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Yep. You can keep the head too and get rid of that 0331 crap, just have to figure out some tabs to hold the coil rail in place.
CF Veteran
Joined: Jul 2012
Posts: 1,185
Likes: 5
From: Pahrump, NV
Year: 1996
Model: Cherokee
Engine: 4.0L
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
If you're considering a RC AAL, you don't need long arms.
Senior Member
Joined: Feb 2013
Posts: 674
Likes: 0
From: SouthEast PA
Year: 2000
Model: Cherokee
Engine: 4.0L
That is worth something actually. A lot of people don't understand what the downstream O2s do on OBD-II Jeeps and often just replace the upstreams. I'd replace the downstreams and see if your code stays away. You'd also do well to check the fuses in the PDC. Sounds like your heater might not be working. don't forget to check out the wiring while you're there. Give the vehicle-side connector a cleaning.
NTK is a Chrysler thing actually. Bosch was back in Renix days. RockAuto's parts selector has the right numbers
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Coil rail can be held on like this
CF Veteran
Joined: Jul 2012
Posts: 1,185
Likes: 5
From: Pahrump, NV
Year: 1996
Model: Cherokee
Engine: 4.0L
Member
Joined: Jun 2012
Posts: 136
Likes: 1
Model: Cherokee
Long arms kits generally begin at 4.5" because that's where a short arm kit starts delivering a harsh ride. Long arms give better on-road manners to those higher lift height. They also have the potential to allow for more suspension travel if your setup is tuned properly.
If you're considering a RC AAL, you don't need long arms.
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
You don't need them, but they can be beneficial. Iron Rock Offroad has one of the cheapest setups, but there are a lot or arguments about their system. The other place to look is Serious Offroad. Besides that, Rock Krawler, T&T, and Clayton are the big dogs.