1988 JEEP CHEROKEE Service Repair Manual

wiper fluid brake pads replacement ground clearance change wheel key alternator

Page 705 of 1378

JEEP CHEROKEE 1988 Service Repair Manual performance ............ A ........... (2) Require repair or
replacement. Further
inspection required.
(

performance ............ A ........... (2) Require repair or
replacement. Further
inspection required.
( 1) - Inoperative includes intermittent operation.
( 2) - Some components may be serviceable; check for accepted
cleaning procedure.
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FUEL FILLER NECKS AND RESTRICTORS
FUEL FILLER NECK AND RESTRICTOR INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Restricted .............. 2 .. Suggest repair or replacement.
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FUEL FILTERS
FUEL FILTER INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Leaking ................. A .. Require repair or replacement.
Maintenance interval .... 3 ... Suggest replacement to comply
with OEM recommended service
interval.
Missing ................. C ............ Require replacement.
Restricted, affecting
performance ............ A ............ Require replacement.
Restricted, not affecting
performance ............ 1 ............ Suggest replacement.
Water-contaminated ...... 2 ............ Suggest replacement.
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FUEL INJECTORS
FUEL INJECTOR INSPECTION\
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Condition Code Procedure
Attaching hardware

Page 706 of 1378

JEEP CHEROKEE 1988 Service Repair Manual missing ................ C ......... Require replacement of
hardware.
Attaching hardware
threads damaged ........ A .. Require repair o

missing ................ C ......... Require replacement of
hardware.
Attaching hardware
threads damaged ........ A .. Require repair or replacement
of hardware.
Attaching hardware
threads stripped
(threads missing) ...... A .. Require repair or replacement
of hardware.
Connector broken ........ A . Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A . Require repair or replacement.
Connector melted ........ A .......... (1) Require repair or
replacement.
Connector missing ....... C ........... Require replacement.
Contaminated ............ A .......... ( 2) Require repair or
replacement.
Inoperative ............. B .......... ( 3) Require repair or
replacement. Further
inspection required.
Leaking ................. A . Require repair or replacement.
Missing ................. C ........... Require replacement.
Resistance out of
specification .......... B . Require repair or replacement.
Restricted, affecting
performance ............ A . Require repair or replacement.
Restricted, not affecting
performance ............ 2 . Suggest repair or replacement.
Terminal broken ......... A . Require repair or replacement.
Terminal burned, affecting
performance ............ A .......... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 . Suggest repair or replacement.
Terminal corroded,
affecting performance .. A . Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 . Suggest repair or replacement.
Terminal loose, affecting
performance ............ B . Require repair or replacement.
Terminal loose, not
affecting performance .. 1 . Suggest repair or replacement.
Threads damaged ......... A . Require repair or replacement.
Threads stripped (threads
missing) ............... A ........... Require replacement.
Wire lead conductors
exposed ................ B . Require repair or replacement.
Wire lead corroded ...... A . Require repair or replacement.
Wire lead open .......... A . Require repair or replacement.
Wire lead shorted ....... A . Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Determine source of contamination, such as engine coolant,
fuel, metal particles, or water. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation or out of
OEM specification. Some components may be serviceable;
check for accepted cleaning procedure.
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FUEL LEVEL SENDERS

Page 707 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual FUEL LEVEL SENDER INSPECTION��\ ��\ ��\ ��\ ��\ ��\ ��\ �� Condition Co$

FUEL LEVEL SENDER INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Inoperative ............. A ........... (1) Require repair or
replacement.
Leaking ................. A .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 2) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
( 1) - Inoperative includes intermittent operation or out of
OEM specification.
( 2) - Determine cause and correct prior to repair or
replacement of part.
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FUEL PRESSURE REGULATORS
FUEL PRESSURE REGULATOR INSPECTION\
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Condition Code Procedure
Contaminated ............ 2 ........... ( 1) Suggest repair or
replacement. Further
inspection required.
Inoperative ............. B ........... ( 2) Require repair or
replacement.
Leaking (internally or
externally) ............ A .. Require repair or replacement.
Pressure out of
specification .......... B .. Require repair or replacement.
Vapor bypass restricted . A .. Require repair or replacement.
( 1) - Some components may be serviceable; check for accepted
cleaning procedure. Determine source of contamination.
Require repair or replacement.

Page 708 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual (2) - Inoperative includes intermittent operation or out of OEM specification. ��\ ��\ ��\ ��\ ��\ ��$

(2) - Inoperative includes intermittent operation or out of
OEM specification.
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FUEL PUMPS (IN-TANK AND EXTERNAL, ELECTRICAL OR MECHANICAL)
FUEL PUMP (IN-TANK AND EXTERNAL, ELECTRICAL OR MECHANICAL) INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Connector broken ........ A .. Require repair or replacement.
Connector (Weatherpack
type) leaking .......... A .. Require repair or replacement.
Connector melted ........ A ........... ( 1) Require repair or
replacement.
Connector missing ....... C ............ Require replacement.
Contaminated ............ A ........ ( 2) Require replacement.
Inoperative ............. A ........... ( 3) Require repair or
replacement.
Leaking externally
(includes pulsator) .... A .. Require repair or replacement.
Leaking internally
(includes pulsator) .... A .. Require repair or replacement.
Noisy ................... 2 .. Suggest repair or replacement.
Out of specification .... B .. Require repair or replacement.
Terminal broken ......... A .. Require repair or replacement.
Terminal burned, affecting
performance ............ A ........... ( 1) Require repair or
replacement.
Terminal burned, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal corroded,
affecting performance .. A .. Require repair or replacement.
Terminal corroded, not
affecting performance .. 2 .. Suggest repair or replacement.
Terminal loose, affecting
performance ............ B .. Require repair or replacement.
Terminal loose, not
affecting performance .. 1 .. Suggest repair or replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
Wire lead conductors
exposed ................ B .. Require repair or replacement.
Wire lead corroded ...... A .. Require repair or replacement.
Wire lead open .......... A .. Require repair or replacement.
Wire lead shorted ....... A .. Require repair or replacement.
( 1) - Determine cause and correct prior to repair or
replacement of part.
( 2) - Determine source of contamination. Require repair or
replacement.
( 3) - Inoperative includes intermittent operation.
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Page 709 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual FUEL RAILS FUEL RAIL INSPECTION��\ ��\ ��\ ��\ ��\ ��\ ��\ �� Condition$

FUEL RAILS
FUEL RAIL INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Contaminated ............ A ........ ( 1) Require replacement.
Leaking ................. A .. Require repair or replacement.
Restricted .............. A .. Require repair or replacement.
Rust-pitted ............. 1 ............ Suggest replacement.
( 1) - Determine source of contamination. Require repair or
replacement.
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FUEL RESTRICTORS
See FUEL FILLER NECKS AND RESTRICTORS .
FUEL TANKS
FUEL TANK INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Baffles loose ........... A .. Require repair or replacement.
Contaminated ............ A ............. ( 1) Require repair.
Corroded internally ..... A .. Require repair or replacement.
Distorted, affecting
performance ............ B ............ Require replacement.
Distorted, not affecting
performance ............ .. ........ No service suggested or
required.
Leaking ................. A .. Require repair or replacement.
( 1) - Determine source of contamination. Require repair or
replacement.
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GAS CAPS
GAS CAP INSPECTION\
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Page 710 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Condition Code Procedure
Application incorrect ... B ........... Require replacement.
Fails to maintain proper
pressure ............... A ...........

Condition Code Procedure
Application incorrect ... B ........... Require replacement.
Fails to maintain proper
pressure ............... A ........... Require replacement.
Gaskets missing ......... C ........... Require replacement.
Leaking ................. A ........... Require replacement.
Missing ................. C ........... Require replacement.
Plugged (vacuum and
pressure relief) ....... A ........... Require replacement.
Seals missing ........... C ........... Require replacement.
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GASKETS
GASKET INSPECTION\
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Condition Code Procedure
Leaking ................. A ........... ( 1) Require repair or
replacement.
( 1) - Require inspection of mating and sealing surface and
repair or replace as necessary.
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GROMMETS (VALVE COVER)
GROMMET (VALVE COVER) INSPECTION\
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Condition Code Procedure
Leaking ................. 2 ........... ( 1) Suggest repair or
replacement.
( 1) - Require inspection of mating and sealing surface and
repair or replace as necessary.
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HARMONIC DAMPERS
HARMONIC DAMPER INSPECTION\
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Condition Code Procedure
Application incorrect ... B ........... Require replacement.
Attaching hardware
broken ................. A .. Require repair or replacement
of hardware.
Attaching hardware
missing ................ C ......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A .. Require repair or replacement
of hardware.
Cracked ................. A ........... Require replacement.
Dented (fluid
type only) ............. A ........... Require replacement.
Keyway distorted ........ A . Require repair or replacement.
Leaking (Fluid damper
only) .................. A ........... Require replacement.
Loose ................... A ........... Require replacement.
Noisy ................... A ........... Require replacement.

Page 711 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Outer ring slipped out of
position ............... A ........... Require replacement.
Positioned incorrectly .. A . Require repair or replacement.
Rubber damping material
deteriorated .....

Outer ring slipped out of
position ............... A ........... Require replacement.
Positioned incorrectly .. A . Require repair or replacement.
Rubber damping material
deteriorated ........... 1 ........... Suggest replacement.
Seal surface worn, causing
a leak ................. A . Require repair or replacement.
Threads damaged ......... A . Require repair or replacement.
Threads stripped (threads
missing) ............... A ........... Require replacement.
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HEATER CONTROL VALVES
HEATER CONTROL VALVE INSPECTION\
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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Bypassed ................ A ............ Require replacement.
Coolant leak ............ A .. Require repair or replacement.
Malfunctioning .......... A ........... ( 1) Require repair or
replacement.
Missing ................. C ............ Require replacement.
Restricted .............. A .. Require repair or replacement.
Vacuum leak ............. A .. Require repair or replacement.
( 1) - Includes inoperative, intermittent operation, or
failure to perform all functions.
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HEATER CORES
HEATER CORE INSPECTION\
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Condition Code Procedure
Air flow restriction .... A .. Require repair or replacement.
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Bypassed ................ A .. Require repair or replacement.
Connection leaking ...... A .. Require repair or replacement.
Corroded ................ 1 .. Suggest repair or replacement.
Fins damaged, affecting
performance ............ A .. Require repair or replacement.
Fins damaged, not
affecting performance .. 2 .. Suggest repair or replacement.
Internal restrictions,

Page 712 of 1378

JEEP CHEROKEE 1988 Service Repair Manual affecting performance .. A .. Require repair or replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
�

affecting performance .. A .. Require repair or replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
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HOSE AND TUBE COUPLERS, CONNECTORS AND CLAMPS
NOTE: When replacing fuel lines and hoses, replace with product
that meets or exceeds OEM design specifications.
HOSE AND TUBE COUPLER, CONNECTOR AND CLAMP INSPECTION
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Condition Code Procedure
Application incorrect ... B ............ Require replacement.
Connected incorrectly ... A ................. Require repair.
Corroded, not reusable .. 1 ............ Suggest replacement.
Cracked ................. A ............ Require replacement.
Insufficient clamping
force, allowing hose to
leak ................... A .. Require repair or replacement.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Safety clip missing (not
leaking) ............... C ... Require replacement of safety
clip.
Stripped ................ A ............ Require replacement.
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HOSE CLAMPS
See HOSE AND TUBE COUPLERS, CONNECTORS AND CLAMPS .
HOSE CONNECTORS
See HOSE AND TUBE COUPLERS, CONNECTORS AND CLAMPS .
HOSE COUPLERS
See HOSE AND TUBE COUPLERS, CONNECTORS AND CLAMPS .
HOSES AND TUBES (FUEL LINES, RADIATOR, VACUUM, BY PASS,
HEATER, RECOVERY TANK AND OIL COOLERS)
HOSE AND TUBE (FUEL LINE, RADIATOR, VACUUM, BY PASS, HEATER,
RECOVERY TANK AND OIL COOLER) INSPECTION
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Condition Code Procedure
Application incorrect ... B ............ Require replacement.
Connected incorrectly ... A ................. Require repair.
Corroded, not reusable .. 1 ............ Suggest replacement.
Cracked ................. A ............ Require replacement.
Dry-rotted .............. 1 .. Suggest repair or replacement.
Hard .................... 1 .. Suggest repair or replacement.
Inner fabric (webbing)
damaged ................ A ............ Require replacement.
Insufficient clamping
force, allowing hose to
leak ................... A .. Require repair or replacement.
Leaking ................. A .. Require repair or replacement.
Maintenance intervals ... 3 ............ Suggest replacement.

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