Useful write-ups by forum members - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > Useful write-ups by forum members

WIN a set of Mammoth Boulder Wheels at ExtremeTerrain.com!Savvy Aluminum Gas Tank SkidTruck & Jeep Fest 2015 - Edmonton

Closed Thread
Unread 05-13-2013, 10:04 PM   #1
chris87xj
JF Admin
 
chris87xj's Avatar
1987 XJ Cherokee 
 
Join Date: Sep 2008
Location: 3rd rock from sun
Posts: 7,825
Useful write-ups by forum members

I made a spot here to help keep track of some of the great write-ups done by our fellow forum members.
If you find one that helps you out, please click the thumbs-up button in the lower right of the first post as a small gesture of appreciation for their taking the time and effort to write it up.
Send me a PM if you have any questions, comments or nominations thanks!

__________________
***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."

JeepForum.com/IndyORV@Redbird-SRA
COTY 2009

chris87xj is offline   Quick reply to this message
Unread 05-13-2013, 11:44 PM   #2
chris87xj
JF Admin
 
chris87xj's Avatar
1987 XJ Cherokee 
 
Join Date: Sep 2008
Location: 3rd rock from sun
Posts: 7,825
Cherokee stock rims encylopedia - by drew and not u

Jeep fluids specs - by Billet

Shock bolt replacement: a fix with pics (Heavy) - by XJ Xtreme

The Official SYE (Slip Yoke Eliminator) Thread *All Read* - by XJK

Hood release cable replacment - by AmnSyd

4.0L Injector swap - by dukie564

Installing JK shocks on my XJ (write-up) - by freemans97XJ

'97 XJ Taurus fan swap installation - by justanotherjpr

HD Offroad no-lift shackle relocation boxes - by Mike934

H.D. Offroad relocation brackets V2 installation by dukie564

How to mount your XJ rear bumper inside the uni-frame - by justanotherjpr

How to replace the turn signal switch on '97+ XJs - by the weirdo

Servicing a turnsignal/hi-lo beam stalk switch - by Azzy

XJ rear hatch dome light switch repair - by M35A2

Cutting and folding rear fenders - by 89SAFARIXJ

Cut And Fold Rear Lower Quarter Panels - The Right Way! by Paraleyes

Installing a 1996 XJ alarm system - by Loveland-WJ

Fixing 97+ Window Lock Switch for Dummies - by itasor

Child Safety Switch Bypass for XJ Windows **Write Up** - by 303_XJ

Removing stubborn rear leaf springs - by Azzy

Transmission mount replacement - by Mean Max

97 XJ Blower Motor removal/replacement - by mortalenema

Grand Cherokee 136 amp alternator upgrade - by Razor.

Greasing the slip-joint on 96+ XJs! - by cricketo99

How to extend the rear differential vent - by dukie564

Starting system diagnostics for no-crank situation - by dukie564

Durango steering box and ZJ tie-rod install on an XJ - by dukie564

A/C to OBA conversion write-up - by RussoGuitar

Installing ZJ rear seat headrests in an XJ - by TPI Monte SS

Installing a C-Rok inner Steering Support brace - by bmyohn

ZJ Rear Disc Conversion to 8.25" Write Up - The Whole Truth!!! - by TPI Monte SS

blower moter blown melted reistor switch wire fix - by 1995sport

Fuel Sender FIX---WRITE-UP - by 79chiefs

Crash Course in Brain Surgery - Replacing ECU capacitors - by sasquachYJ

Fixing bad caps in sealed type XJ PCMs by - LagartoJuancho

XJ coil spring rates - by gunselman

Basic Maintenance - 4.0L serpentine belt tension adjustment - by Mean Max

Headliner Redux - by kzjim

Ben's "you already have a relay box" Relay Box - by WKdeuce

Stock Cherokee tire carrier information - by Holder350

Refurbishing the NSS - by troubled96xj

Removing 97+ doors with power *write-up* - by sharpie

The 0331 head swap thread - by jeepkid03

The Official XJ 4.0L Motor Mount Thread - by NW99XJ

AW4 Solenoid replacement write-up (no 56k). - by freemans97XJ

How to: Fixed grooved caliper brackets on a Dana 30 - by justanotherjpr

My ACTUAL Evaporator/Heater Core Removal/Installation Thread..... - by xjguy98 & f430fan

Harmonic Balancer Replacement "How-to" - by graxirena

XJ Clock Spring Repair Write-up - by BIGGJERRYC

Replacing the Door Check - by morrie

How to reindex the camshaft position sensor - by Kevin108

Aussie Install Chrysler 8.25 29sp Write-Up - by JeepN4KC

Complete Instructions for Eliminating Oil Filter Adaptor on Jeep XJ Cherokee - by Darp

Install a new style front clip on your early generation XJ - by fedx95

How To: CPS Install for XJ 97+ with AW4 - by V1GiLaNtE

**Writeup** Installing Cruise Control In Your 97+ XJ - by bmyohn

Valve cover gasket replacement...lots of pics - by samger2

Replaced Engine Ground Strap *Writeup* Lots of picks!! - by Jmila1901

How to find all XJ parts on clearance at Rock Auto - by V1GiLaNtE

Rebuilding The NP-231 Linkage - by Hudson

Dual battery/isolated batteries/winch/welding - by JeepHammer

Headlights info - by mschi772

Winter Tires - by mschi772

For those of you wanting to do the Peugeot to AX-15 swap this thread is for you! - by goneboating06

XJ: WJ door handle swap - by Hussler

Dual battery/isolated batteries/winch/welding - by JeepHammer

Redline Hoodlift Installation Write-Up - by Charley3
__________________
***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."

JeepForum.com/IndyORV@Redbird-SRA
COTY 2009

chris87xj is offline   Quick reply to this message
Unread 07-17-2013, 10:26 PM   #3
chris87xj
JF Admin
 
chris87xj's Avatar
1987 XJ Cherokee 
 
Join Date: Sep 2008
Location: 3rd rock from sun
Posts: 7,825
Renix and other related info:

If you own a Renix Jeep, you'll want to check this out. > Cruiser's Mostly Renix Tips
Cruiser was a Service Manager and Shop Foreman at a Jeep dealership from 1980 through 1992 while Renix was the powerhouse of jeeps.

Quote:
Originally Posted by cruiser54 View Post
Thread Index by Post#
Revised 03-09-2014
Instructions have been written *
Photos included with instructions **

1 - Ground refreshing*
2 - C101 connector refreshing**
3 - Connector and relay/receptacle refreshing**
4 - Coil/ICM contacts*
5 - Checking sensor grounds*
6 - Sensor ground upgrade**
7 - CPS testing and adjusting**
8 - TPS testing and adjusting**
9 - ECU connector refreshing*
10- Trans plug connector refreshing*
11- Throttle body and IAC cleaning*
12- Setting your 4.0 to #1 TDC**
13- Renix Distributor indexing**
14- Restoring throttle butterfly adjustment*
15- Rear main seal diagnosis*
16- Vacuum test for exhaust restriction*
17- HO engine into Renix*
18- Improving the instrument panel ground**
19- Headlight harness installation*
20- 4WD shifting tips*
21- Renix EGR valve test*
22- Renix vacuum harnesses**
23- CPS timing advance mod**
24- 4.0 Engine date codes**
25- Valve cover mod**
26- Oil Filler cap Mod*
27- C101 Connector Elimination**
28- Setting base idle
29- Renix O2 sensor diagnostics
30- Oil filler cap fix
31- Using water to remove carbon
More helpful Renix links...
__________________
***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."

JeepForum.com/IndyORV@Redbird-SRA
COTY 2009

chris87xj is offline   Quick reply to this message
Unread 09-20-2013, 04:54 PM   #4
chris87xj
JF Admin
 
chris87xj's Avatar
1987 XJ Cherokee 
 
Join Date: Sep 2008
Location: 3rd rock from sun
Posts: 7,825
Other Noteworthy Threads...

Budget builds: What Junkyard Parts will fit an XJ?

XJ Interior Mods? Whatcha got?

How my XJ gets 25 mpg highway from a few mods

The most awesome Gear Ratio Calculator on the net

Good breakdown of wheel hub components by CJ7-Tim

4.0 engine compatibility

Quote:
Originally Posted by dmill89 View Post

Yep, here are the 2-letter Jeep model designations if it interests you.

Jeep Model designations:
XJ: 84-01 "Regular" (not Grand) Cherokees.
SJ/FSJ: "Full Sized Jeeps" Wagnoeer (pre-84), Grand Wagoneer, Cherokee (pre-84), J-Series trucks
YJ: 87-95 Wrangler (1st gen)
TJ: 97-06 Wrangler (2nd gen)
JK: 07+ Wrangler (3rd gen)
ZJ: 93-98 Grand Cherokee (1st gen)
WJ: 99-04 Grand Cherokee (2nd gen)
WK: 05-10 Grand Cherokee (3rd gen)
WK2: 11+ Grand Cherokee (4th gen)
KJ: 02-07 Liberty (1st gen)
KK: 08-13 Liberty (2nd gen)
XK: Commander
MK: Patriot/Compass
MJ: Comanche (an XJ Cherokee based pickup)
CJ: "Civilian Jeep" pre-wrangler "Jeep Jeeps".
KL: The "new" 2014 Cherokee.
Quote:
Originally Posted by cherox View Post

What other Jeep wheels will fit your 1997-2001 XJ?

93-98 Grand Cherokee - ZJ = YES
87-2006 Wrangler - YJ TJ LJ = YES
2007-Present Compass/Patriot - MK = YES
02-08 Liberty - KJ KK = YES

99-Present Grand Cherokee - WJ WK WK2 = NO
06-10 Commander - XK = NO
2007-Present Wrangler JK/JKU = NO
14-Present Cherokee - KL = NO
15 Renegade - BU = NO
How to test your CPS:
Quote:
Originally Posted by CJ7-Tim View Post

The starter engages, but it just won't fire up and run, correct ?

If that is the case, test the CPS.


The most likely cause of it cranks and cranks but won't start up is the Crankshaft Position Sensor (CPS) located on the transmission bell housing. Often this part is also referred to as the CranKshaft Position Sensor (CKP). CPS/CKP failure is very common.The CPS/CKP can stop working with no warning or symptoms and the engine will not run or the engine may randomly stall for no apparent reason. Crank Position Sensors can have intermittent “thermal failure”. This means that the CPS/CKPfails when engine gets hot, but works again when it cools back down.

Symptoms-
- Starter cranks and cranks but engine won't start up
- Fuel gauge and voltage gauges may not work or display properly.
- You sometimes will have No Bus displayed on the odometer after 30-60 seconds.
- A failed CPS/CKP may or may not throw a CEL trouble code.
- May have no spark at the spark plugs.
- Fuel pump should run and prime for 3-5 seconds.

If the CPS/CKP is failed sometimes the OBD-II code reader cannot make a connection to the computer or cannot read Check Engine Light/MIL codes because the CPS/CKPhas failed.

Diagnostic steps to confirm the CPS is the cause of your no-start

-You should be able to verify a bad cps, by unplugging it, and turning the ignition key to ON. If the voltage gauge and/or the fuel gauge now displays correctly, replace the CPS.
-Unplugging and reconnecting the CPS sensor where it connect to the main harness near the back of the intake manifold usually resets the ECU and if the jeep fires right up after doing this you can bet that the CPS is faulty and needs to be replaced.
-Exchange the fuel pump relay and the ASD relay with one of the other similar ones in the PDC to eliminate these relays as the cause of the no-start. Confirm that the fuel pump runs for 3-5 seconds when you turn the ignition key to ON.
-Eliminate the NSS as a cause of no start. Wiggle the shift lever at the same time you try to start. Put the transmission in Neutral and do the same. Do the reverse lights come on when the shifter is in Reverse?
-Inspect the wires and wire connectors at the O2 sensors on the exhausts pipe. A short circuit from melted insulation or from broken O2 sensor wires can blow a fuse and the ECU/ECM will lose communication.

If you buy a new CPS, get a genuine Jeep CPS, or the premium one from NAPA. Cheap crappy “Lifetime Warranty” parts are often out of specification or even failed right out of the box. They usually also have a shorter service life than better quality parts. Buy good quality repair parts and genuine Jeep sensors for best results.

Also remember to perform basic trouble shooting of the start and charge systems. Remove, clean, and firmly reconnect all the wires and cables to the battery, starter, and alternator. Look for corroded or damaged cables and replace as needed. Do the same for the grounding wires from the battery and engine to the Cherokee's frame/body. Jeeps do not tolerate low voltage or poor grounds and the ECM/ECU will behave oddly until you remedy this.

Crankshaft Position Sensor Connector (CPS/CKP)

.



.

.

CPS Testing

TESTING PROCEDURE 1991 – 2001 4.0L H.O. engines
1. Near the rear of intake manifold, disconnect sensor pigtail harness connector from main wiring harness.
2. Place an ohmmeter across terminals B and C (See Image). Ohmmeter should beset to the 10K-or-2OK scale for this test.
3. The meter reading should be open (infinite resistance). Replace sensor if a low resistance is indicated.

TESTING PROCEDURE for 1987 – 1990 4.0 L engines
Test # 1 - Get a volt/ohm meter and set it to read 0 - 500 ohms. Unplug the CPS and measure across the CPS connector's A & B leads. Your meter should show a CPS resistance of between 125 - 275 ohms. If the CPS is out of that range by much, replace it.
Test # 2 - You'll need a helper for this one. Set the volt/ohm meter to read 0- 5 AC volts or the closest AC Volts scale your meter has to this range.Measure across the CPS leads for voltage generated as your helper cranks the engine. (The engine can't fire up without the CPS connected but watch for moving parts just the same!) The meter should show .5 - .8 VAC when cranking.(That's between 1/2 and 1 volt AC.) If it's below .5vac, replace it.

The 2000 and 2001 will have the CPS in the same location on the bell housing, but the wire connector is on the passenger side, near or on top of the Transfer case, not as shown in the diagram below. Simply follow the wire from the sensor to the wire connector.

.



Quote:
Originally Posted by CCKen View Post
Here's pics of the grounds:

G100. The main battery to chassis ground.



G101. The main ground for the PCM, TCM, and O2S heaters.



An alternate chassis to battery ground path is through the radio interence suppression bonding strap on the firewall. It's woth checking/cleaning.



Check/clean these grounds and get back with your results.
Quote:
Originally Posted by CCKen View Post
Here's what the inside of the HVAC Unit looks like:






__________________
***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."

JeepForum.com/IndyORV@Redbird-SRA
COTY 2009

chris87xj is offline   Quick reply to this message
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.