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XJ Ask the Question Thread
This is probably supremely dumb -- but I had a fluttering & vibrating idle in my wife's Saturn that was nothing more than a dirty air filter. I'm assuming you've already checked this, but figured since it wasn't explicitly stated, it was worth posting just in case. If nothing else, it is easy to check.
CF Veteran
Joined: Oct 2009
Posts: 1,155
Likes: 0
From: Virginia Beach, VA
Year: 1991
Model: Cherokee
Engine: 4.0L H.O.
Not dum at all. Yea it is fairly new, but in an effort to eliminate things such as that I disconnected the intake tube from the air box and the bad idle rears its ugly head regardless. Once it does start it's bad idling I pop off an injector and it settles out put it back on and I don't have any problems (I don't even have to drive it, it can go through this whole song and dance in my garage) thx....any input is appreciated.
Have you replaced your O2 sensor?
☠ CF Sheriff ☠

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

I have replaced the front o2, but I just cleaned out the rear one. I did this when I discovered a crack in my manifold. I replaced it with a SS APN header and new cat and muff as well. The front o2 is about 2 months old...could it have fouled out from the rich condition already?
Keeping in mind this idle problem was happening before the exhaust overhaul and after.
...maybe I can talk one of my local jeepers into letting me swap mine for his and see if that makes a difference. I hate to drop another $60 on an o2 sensor if I don't have too.
Junior Member
Joined: Jun 2010
Posts: 53
Likes: 0
From: Auburn, CA.
Year: 96 2 Door Sport
Model: Cherokee
My rear leafs are gone giving me that "saggin waggin' look, so new leafs are in order.
I notice that Quadratec has a Heavy duty 7" arch pack.
Would this be a better replacement for stock or would I end up with that raked, 70's muscle car look? I really wouldn't want my rear to end up sitting higher than my front.
I notice that Quadratec has a Heavy duty 7" arch pack.
Would this be a better replacement for stock or would I end up with that raked, 70's muscle car look? I really wouldn't want my rear to end up sitting higher than my front.
Senior Member
Joined: May 2010
Posts: 530
Likes: 0
From: Nevada City, California
Year: 2K
Model: Cherokee
Engine: I6 with Mustang fuel injectors; 60mm Throttle Body;
I didn't know what a cat in a microwave sounded like. It's even worse than nails on a chalkboard. Man, what a mess. If I don't clean it up fast then there's going to be some serious trouble here tonight.
Can you use Super Clean in the microwave?

...and yeah, if your fuel pump sounds like that then you better get a new one!
Seasoned Member
Joined: Aug 2010
Posts: 294
Likes: 0
From: Pahoa, Hawaii
Year: 1995
Model: Cherokee
Engine: 4.0 HO K&N filter #703 injectors
How do I get the oil filter adapter bolt if the Torx splines on the bolt have stripped out, It is really on there! I have heard of putting a pipe wrench on there but I don't see how to even get one in there!
Thanks
Thanks
I am brand new here, and in fact brand new to cherokees. I just bought one the other day and I got a really good deal, so obviously its probably got a problem or two. It has a high idle, sometimes rough and it seems to backfire once in a while through the intake. From what i've read i'm assuming this is the fuel pump but i'm not sure. Any thoughts out there?
CF Veteran
Joined: Mar 2009
Posts: 28,068
Likes: 6
From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
I am brand new here, and in fact brand new to cherokees. I just bought one the other day and I got a really good deal, so obviously its probably got a problem or two. It has a high idle, sometimes rough and it seems to backfire once in a while through the intake. From what i've read i'm assuming this is the fuel pump but i'm not sure. Any thoughts out there?
CF Veteran
Joined: Oct 2009
Posts: 1,155
Likes: 0
From: Virginia Beach, VA
Year: 1991
Model: Cherokee
Engine: 4.0L H.O.
CF Veteran
Joined: Mar 2011
Posts: 1,423
Likes: 0
From: Owensville, MO
Year: 1998
Model: Grand Cherokee
Engine: 5.9
My rear leafs are gone giving me that "saggin waggin' look, so new leafs are in order.
I notice that Quadratec has a Heavy duty 7" arch pack.
Would this be a better replacement for stock or would I end up with that raked, 70's muscle car look? I really wouldn't want my rear to end up sitting higher than my front.
I notice that Quadratec has a Heavy duty 7" arch pack.
Would this be a better replacement for stock or would I end up with that raked, 70's muscle car look? I really wouldn't want my rear to end up sitting higher than my front.






