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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
☠ 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
Why do you ask?
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
PSSST, I have something I made JUST for you (I swear
)
https://www.cherokeeforum.com/f51/no...nostics-78934/
)https://www.cherokeeforum.com/f51/no...nostics-78934/
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
I just bought a 98 jeep cherokee the truck doesn't start though ... when you turn the key all the dash lights come on and but when you turn the key the starter does not engage ... i know its not the starter because if you jump the starter with a screw driver the truck turns right on and runs great.
So i was told its possibly an inline fuse that goes from the fuse box down to the starter just wanted to see if there was any other possibilities?
Sorry if this is the wrong place for this post
So i was told its possibly an inline fuse that goes from the fuse box down to the starter just wanted to see if there was any other possibilities?
Sorry if this is the wrong place for this post
CF Veteran
Joined: Dec 2010
Posts: 6,880
Likes: 0
From: Frederick, Maryland
Year: 1996
Model: Cherokee
Engine: 4.0 I-6 High output
although DUKIE pretty much answered this for you. The fastest and easiest way to diagnose your problem is to sit in your rig. Turn key to 1, depress brake pedal and cycle your gears down to 12 back to neutral then try to start your rig. If she starts your NSS is going or dirty. Welcome too the world of cherokee
THANKS guys im gonna try it tomorrow u guys are the best that was super helpful i looked around on the forums first but didn't find that but u guys r the best
Seasoned Member
Joined: Jan 2011
Posts: 295
Likes: 0
From: Roscoe, IL
Year: 2000
Model: Cherokee
Engine: 4.0L 242 Power Tech I6
CF Veteran
Joined: Dec 2010
Posts: 1,246
Likes: 1
From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
I have a 98 Cherokee and assuming my current alternator is stock or similar to stock power rating, does it give out enough amps to power an aftermarket stereo/speaker system, a small single sub, and rarely used offroad lights/fog lights? Oh and I have a die hard battery rated at 695 cranking amps.
CF Veteran
Joined: Apr 2010
Posts: 1,053
Likes: 0
From: fallon, nv
Year: 1988
Model: Cherokee
Engine: 4.0
HEY DUKIE, 87 xj 4.0l auto laredo... when i engage cruise control it accelerates me about 10mph then levels out and after a few seconds will accelerate again... i know its a vacuum leak most likely but im not sure where to start... any info will b helpful thx
☠ 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 a 98 Cherokee and assuming my current alternator is stock or similar to stock power rating, does it give out enough amps to power an aftermarket stereo/speaker system, a small single sub, and rarely used offroad lights/fog lights? Oh and I have a die hard battery rated at 695 cranking amps.
Best idea is to upgrade the alternator, wiring, and battery.
The alternator out of a ZJ Grand Cherokee is good for 136A and requires minimal modifications to install, or you could spend more money and get a Mean Green alternator or other high power model. Note that you MUST upgrade the wire size from the alternator to the battery when you do this mod.
For the battery spend the cash on a Optima Yellow Top. It's a deep cycle battery it'll hold all the power you need for most anything.
☠ 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
If there's no vacuum leak, you're probably looking at a bad servo.
Unfortunately this is one of those hard systems to test. Good luck
..Orrrr you could do what I did, spend $15 on some heavy gauge wire, a momentary switch, and an inline fuse.. It was just the best choice I had with no garage, -10 degree temps outside, and very little time to fix it. Eventually, I found a great place to mount my push button. Now, I just need the key turned to "on" and hold the button down until it starts. 

So you bypassed the NSS? who says u need a Lexus to have a push button start hahah
CF Veteran
Joined: Dec 2010
Posts: 1,246
Likes: 1
From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by dukie564
The stock alternator is a 90amp model. Once you start adding high power accessories it quickly becomes insufficient. I have a aftermarket head unit and speakers and fog lights as well. My voltage gauge gets pretty low on the scale when I have my headlights, stereo, fog lights, wipers, and blower fan on when it's raining. Add a sub and amp to the mix and you're going to have issues.
Best idea is to upgrade the alternator, wiring, and battery.
The alternator out of a ZJ Grand Cherokee is good for 136A and requires minimal modifications to install, or you could spend more money and get a Mean Green alternator or other high power model. Note that you MUST upgrade the wire size from the alternator to the battery when you do this mod.
For the battery spend the cash on a Optima Yellow Top. It's a deep cycle battery it'll hold all the power you need for most anything.
Ok so today I bought a fuel filter since ive never changed it. I come home to install it and I can't seem to find it. Anyone know where it's at exactly? I looked all over the engine bay and can't seem to find it. That's usually where they are.




