1988 JEEP CHEROKEE clutch

oil dipstick set clock ad blue fog light bulb ESP inoperative change time

Page 1264 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual Noise When Stepping On Clutch .Bad release bearing, .Worn pilot bearing ��\ ��\ ��\ ��\ ��$

Noise When Stepping On Clutch .Bad release bearing,
.Worn pilot bearing
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Ticking Or Screeching As
Clutch Is Engaged .Faulty release bearing,
.Uneven pressure plate fingers
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Click Or Snap When Clutch
Is Engaged .Worn clutch fork,
.Worn or broken front bearing
retainer
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Transmission Shifts Hard .Clutch not releasing,
.Shift mechanism binding,
.Clutch installed backwards
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Will Not Shift Into One
Gear, Shifts Into All
Others .Bent shift fork,
.Worn detent balls
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Locked Into Gear,
Cannot Shift .Clutch adjustment,
.Worn detent balls
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Transmission Jumps Out
Of Gear .Pilot bearing worn,
.Bent shift fork,
.Worn gear teeth or face
.Excessive gear train end play
.Worn synchronizers
.Missing detent ball spring
.Shift mechanism worn or out of
adjustment
.Engine or transmission mount
bolts loose or out of adjustment
.Transmission not aligned
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Shift Lever Rattle .Worn shift lever or detents
.Worn shift forks
.Worn synchronizers sleeve
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Shift Lever Hops Under
Acceleration .Worn engine or transmission
mounts
( 1) - Most units use spur cut gears in reverse and are noisy
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POWERTRAIN
CLUTCH TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC CLUTCH TROUBLE SHOOTING CHART

Page 1265 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual ��\ ��\ ��\ ��\ ��\ ��\ ��\ �� CONDITION POSSIBLE CAUSE$

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CONDITION POSSIBLE CAUSE CORRECTION\
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Chattering or Incorrect clutch adjustment Adjust clutch
Grabbing
Oil, grease or glaze on Disassemble and clean
facings or replace
Loose "U" joint flange See DRIVE AXLES
article
Worn input shaft spline Replace input shaft
Binding pressure plate Replace pressure plate
Binding release lever See CLUTCH article
Binding clutch disc hub Replace clutch disc
Unequal pressure plate Replace worn/misaligned
contact components
Loose/bent clutch disc Replace clutch disc
Incorrect transmission Realign transmission
alignment
Worn pressure plate, disc Replace damaged
or flywheel components
Broken or weak pressure Replace pressure
springs plate
Sticking clutch pedal Lubricate clutch pedal
& linkage
Incorrect clutch disc Replace clutch disc
facing
Engine loose in chassis Tighten all mounting
bolts
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Failure to Oil or grease on clutch Clean or replace clutch
Release facings clutch disc
Incorrect release lever or See CLUTCH article
pedal adjustment
Worn or broken clutch Replace clutch disc
facings
Bent clutch disc or Replace damaged
pressure plate components
Clutch disc hub binding on Clean or replace clutch
input shaft disc and/or input shaft
Binding pilot bearing Replace pilot bearing
Sticking release bearing Replace release bearing
sleeve and/or sleeve
Binding clutch cable See CLUTCH article

Page 1266 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Defective clutch master Replace master cylinder
Defective clutch slave Replace slave cylinder
Air in hydraulic system Bleed hydrau

Defective clutch master Replace master cylinder
Defective clutch slave Replace slave cylinder
Air in hydraulic system Bleed hydraulic system
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Rattling Weak or broken release Replace spring and
lever spring check alignment
Damaged pressure plate Replace pressure plate
Broken clutch return spring Replace return spring
Worn splines on clutch disc Replace clutch disc
or input shaft and/or input shaft
Worn clutch release bearing Replace release bearing
Dry or worn pilot bearing Lubricate or replace
pilot bearing
Unequal release lever Align or replace
contact release lever
Incorrect pedal free play Adjust free play
Warped or damaged clutch Replace damaged
disc components
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Slipping Pressure springs worn or Release pressure plate
Oily, greasy or worn Clean or replace clutch
facings disc
Incorrect clutch alignment Realign clutch assembly
Warped clutch disc or Replace damaged
pressure plate components
Binding release levers or Lubricate and/or
clutch pedal replace release
components
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Squeaking Worn or damaged release Replace release bearing
Dry or worn pilot or Lubricate or replace
release bearing assembly
Pilot bearing turning in Replace pilot bearing
crankshaft and/or crankshaft
Worn input shaft bearing Replace bearing and
seal
Incorrect transmission Realign transmission
alignment
Dry release fork between Lubricate release fork
pivot and pivot
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Heavy and/or Sticking release bearing Replace release bearing
Stiff Pedal sleeve and/or sleeve

Page 1267 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Dry or binding clutch Lubricate and align
pedal hub components
Floor mat interference Lay mat flat in proper

Dry or binding clutch Lubricate and align
pedal hub components
Floor mat interference Lay mat flat in proper
with pedal area
Dry or binding ball/fork Lubricate and align
pivots components
Faulty clutch cable Replace clutch cable
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Noisy Clutch Faulty interlock switch Replace interlock
Pedal switch
Self-adjuster ratchet Lubricate or replace
noise self-adjuster
Speed control interlock Lubricate or replace
switch interlock switch
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Clutch Pedal Binding clutch cable See CLUTCH article
Sticks Down
Springs weak in pressure Replace pressure plate
plate
Binding in clutch linkage Lubricate and free
linkage
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Noisy Dry release bearing Lubricate or replace
release bearing
Dry or worn pilot bearing Lubricate or replace
bearing
Worn input shaft bearing Replace bearing
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Transmission Weak springs in pressure Replace pressure plate
Click plate
Release fork loose on ball Replace release fork
stud and/or ball stud
Oil on clutch disc damper Replace clutch disc
Broken spring in slave Replace slave cylinder
cylinder
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DRIVE AXLE - NOISE DIAGNOSIS
Unrelated Noises
Some driveline trouble symptoms are also common to the
engine, transmission, wheel bearings, tires, and other parts of the
vehicle. Ensure cause of trouble actually is in the drive axle before
adjusting, repairing, or replacing any of its parts.
Non-Drive Axle Noises
A few conditions can sound just like drive axle noise and
have to be considered in pre-diagnosis. The 4 most common noises are
exhaust, tires, CV/universal joints and wheel trim rings.

Page 1270 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual ��\ ��\ ��\ ��\ ��\ ��\ ��\ �� Knocking or Clunking Differe$

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Knocking or Clunking
Differential Side Gear
Clearance Check Clearance
Worn Pinion Shaft Replace Pinion Shaft
Axle Shaft End Play Check End Play
Missing Gear Teeth Check Differential/
Replace Gear
Wrong Axle Backlash Check Backlash
Misaligned Driveline Realign Driveline
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Clinking During Engagement
Side Gear Clearance Check Clearance
Ring and Pinion Backlash Check Backlash
Worn/Loose Pinion Shaft Replace Shaft/Bearing
Bad "U" Joint Replace "U" Joint
Sticking Slip Yoke Lube Slip Yoke
Broken Rear Axle Mount Replace Mount
Loose Drive Shaft Flange Check Flange
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Click/Chatter On Turns
Differential Side Gear
Clearance Check Clearance
Wrong Turn On Plates (1) Replace Clutch Plates
Wrong Differential
Lubricant ( 1) Change Lubricant
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Knock Or Click Flat Spot on Rear
Wheel Bearing Replace Wheel Bearing
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Low Vibration At All Speeds
Faulty Wheel Bearing Replace Wheel Bearing
Faulty "U" Joint Replace "U" Joint
Faulty Drive Shaft Balance Drive Shaft
Faulty Companion Flange Replace Flange
Faulty Slip Yoke Flange Replace Flange
( 1) - Limited slip differential only.
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FWD AXLE SHAFTS & CV JOINTS TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to

Page 1369 of 1378

JEEP CHEROKEE 1988 Service Repair Manual WIR IN G D IA G RAM S

1988 J e ep C hero ke e
1988 Wiring Diagrams
Jeep
Cherokee & Wagoneer
IDENTIFICATION
COMPONENT LOCATION MENU
COMPONENT LOCATI

WIR IN G D IA G RAM S

1988 J e ep C hero ke e
1988 Wiring Diagrams
Jeep
Cherokee & Wagoneer
IDENTIFICATION
COMPONENT LOCATION MENU
COMPONENT LOCATIONS TABLE\
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Component Figure No. (Location)
A/C & Htr Systems ............................... 5 (A-D 16-19)
Alternator ............................................ 1 (C 3)
Audio Alarm Module ................................... 7 (D 27)
Back-Up Lt Sw (M/T) .................................. 4 (D 12)
Battery ............................................... 1 (A 2)
Beam Sel Sw .......................................... 6 (E 23)
Brake Warning Sw ..................................... 6 (C 20)
Clock ................................................ 7 (E 27)
Clutch Switch ........................................ 4 (E 15)
Courtesy Lights ................................... 7 (C 24-26)
Cruise Ctrl Sys ................................... 4 (E 12-15)
Diag Conn D1 (2.5L) ................................... 3 (B 9)
Diag Conn D1 (4.0L) ................................... 2 (B 4)
Diag Conn D2 (2.5L) .................................. 3 (B 11)
Diag Conn D2 (4.0L) ................................... 2 (B 7)
DIR Hazard Sw ................................... 6 (D-E 20-21)
Door Switches ........................................ 7 (C 27)
Elect Ctrl Unit (2.5L) ............................. 3 (A 9-10)
Elect Ctrl Unit (4.0L) .............................. 2 (A 4-7)
Engine Compartment Lt ................................. 1 (C 1)
Fog Light Relay ....................................... 1 (D 2)
Fog Light Sw ...................................... 6 (E 21-22)
Fuel Pump Rly (2.5L) .................................. 3 (C 9)
Fuel Pump Rly (4.0L) ................................ 2 (E 5-6)
Fuel Tank Unit ....................................... 6 (B 20)
Fus Links ........................................... 1 (B 2-3)
Fuse Block ...................................... 4 (B-D 12-15)
4WD Switch ..................................... 6 (C 20, D 21)
Gear Sel Sw .......................................... 5 (C 16)
Glove Box Light ...................................... 7 (C 25)
Headlight Delay Module ............................... 6 (E 23)
Headlight Switch .................................. 6 (D 22-23)
Horn Relay ............................................ 1 (C 2)
Ignition Ctrl Mod (2.5L) ............................ 3 (B-C 8)
Ignition Ctrl Module (4.0L) ........................... 2 (E 4)
Ignition Key Warn Sw ................................. 7 (D 26)
Ignition Switch ................................... 4 (A 12-15)
Illum Lights .................................... 7 (C-D 24-25)
Instrument Cluster .............................. 6 (A-C 22-23)
Keyless Entry Module .............................. 7 (B 24-25)
Latch Rly (B+) (4.0L) ............................... 2 (B-C 4)
Power Antenna Rly .................................. 7 (D-E 27)
Power/Comfort Sw ..................................... 5 (D 19)
Power Door Lock Sys ............................. 7 (A-C 24-27)
Power Mirror Sw ................................. 7 (D-E 24-25)
Power Seat Sw ................................... 8 (A-B 28-29)

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