Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
☠ 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 put a good running 99 wrangler engine in my 90 xj(friends engine he put in a 5.3 chevy) It runs but is backfiring out the exhaust.I've tried to reset the distributor 3 times and I'm getting a little frustrated.I had to use almost everything from the xj on the wrangler engine(longblock) I have alot of mechanical experiance but not on 4.0's I read the manual and can't figure why it won't run smooth..thanks in advance for any help..
Donnie
Donnie
CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
X2 on that. I just put a "93" engine in my 2000 cherokee. I had to put my sensors on the older engine. The coputer of you rig is set up to run those sensors so you have to keep that portion of the rig the same unless you plan to get a new computer. My 2 coppers.
Seasoned Member
Joined: Jan 2010
Posts: 412
Likes: 0
From: Former Tampa Fl. now Southern Indiana
Year: 1990
Model: Cherokee
Engine: 4.0 HO
The one and only thing you should have swapped is the lower longblock. ALL sensors, as well as the head, exhaust and intake manifold, distributor, and ecu must remain the same for the engine to function. In other words it needs to remain a full renix system. The renix engine has completely different timing patterns than the HO 4.0L engine and parts are not interchangeable.
CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
I even had to use the flex plate from my 2000 engine, because the crank shaft sensor use's the slots in the flex plate to tell the comp where the crank is. The flex plate from the donor engine was quite a bit different.
☠ 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
^^ this is what is happening on the original question asker's XJ. The crank sensor signal isn't indexed correctly for the the engine.
CF Veteran
Joined: Feb 2011
Posts: 3,500
Likes: 0
From: Long Beach, Ca
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Originally Posted by nme159
What do you guys think about the two main styles of antennas for cb's out there? The short stick or the 102" whips. Pro's con's of each?
There are so many options for antennas so don't limit yourself to just the 4' fiberglass or 102" whip. Everyone will have different opinion even with the same setup in. the same vehicle.
Newbie
Joined: Nov 2010
Posts: 8
Likes: 0
From: Orange County, CA
Year: 1989
Model: Cherokee
Engine: 4.0L Inline 6 HO
grinding / whooping noise when accelerating
Hey guys,
Just recently my Jeep has been making a loud grinding / clicking / whooping noise when accelerating. Its only when moving forward and the faster I go the faster the whooping and the higher pitched it gets. I took a look under it to see if I could see what it might be and the transfer case seemed to be barely leaking.
Any help would be appreciated because it is embarrassing to drive around with it like this. Thanks.
Just recently my Jeep has been making a loud grinding / clicking / whooping noise when accelerating. Its only when moving forward and the faster I go the faster the whooping and the higher pitched it gets. I took a look under it to see if I could see what it might be and the transfer case seemed to be barely leaking.
Any help would be appreciated because it is embarrassing to drive around with it like this. Thanks.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by Kong
Hey guys,
Just recently my Jeep has been making a loud grinding / clicking / whooping noise when accelerating. Its only when moving forward and the faster I go the faster the whooping and the higher pitched it gets. I took a look under it to see if I could see what it might be and the transfer case seemed to be barely leaking.
Any help would be appreciated because it is embarrassing to drive around with it like this. Thanks.
Just recently my Jeep has been making a loud grinding / clicking / whooping noise when accelerating. Its only when moving forward and the faster I go the faster the whooping and the higher pitched it gets. I took a look under it to see if I could see what it might be and the transfer case seemed to be barely leaking.
Any help would be appreciated because it is embarrassing to drive around with it like this. Thanks.
Where do you hear it coming from? When you went under your rig did you try feeling of anything was loose.
CF Veteran
Joined: Feb 2011
Posts: 3,500
Likes: 0
From: Long Beach, Ca
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Originally Posted by SqueakyT1O
OK I have an 01 limited....driving down the road I get a tapping like something is loose. I crawled under and looked but found nothing loose...any ideas?
CF Veteran
Joined: Feb 2011
Posts: 3,500
Likes: 0
From: Long Beach, Ca
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Originally Posted by SqueakyT1O
I did, but it more of a tapping like a worn ball joint, but they didn't have any play....its front passenger side