1988 JEEP CHEROKEE fuel

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Page 78 of 1378

JEEP CHEROKEE 1988 Service Repair Manual connect Fuel Pressure Gauge (J-34730-1). See Fig. 3. Start engine and
observe fuel pressure. With vacuum hose connected to pressure
regulator, pressure should be about 31 psi (2.2 kg/cm
�)), and about

Page 86 of 1378

JEEP CHEROKEE 1988 Service Repair Manual Fig. 9: Fuel Injector Diagnostics

Page 91 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual �\ \ \ \ \ \ \ ABBREVIATION DEFINITION$

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ABBREVIATION DEFINITION

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B/P Backpressure

BAC By-Pass Air Control

BAP Barometric Absolute Pressure Sensor

BARO Barometric

BBDC Before Bottom Dead Center

BCM Body Control Module

BDC Bottom Dead Center

BHP Brake Horsepower

BLK Black

BLU Blue

BMAP Barometric & Manifold Absolute Pressure Sensor

BOO Brake On-Off Switch

BP Barometric Pressure sensor

BPS Barometric Pressure Sensor

BPT Backpressure Transducer

BRN Brown

BTDC Before Top Dead Center

BTU British Thermal Unit

BVSV Bimetallic Vacuum Switching Valve

Baro. Barometric

Batt. Battery

Bbl. Barrel (Example: 4-Bbl.)

Blst. Ballast

Blwr. Blower

Brkr. Breaker

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"C" ABBREVIATION TABLE
"C" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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C Celsius (Degrees)

C(3) I Computer Controlled Coil Ignition

C(4) Computer Controlled Catalytic Converter

CANP Canister Purge solenoid

CARB California Air Resources Board

CAT Catalytic Converter

CB Circuit Breaker

CBD Closed Bowl Distributor

CBVV Carburetor Bowl Vent Valve

cc Cubic Centimeter

CCC Computer Command Control

CCD Computer Controlled Dwell

CCM Central Control Module

CCO Converter Clutch Override

CCOT Cycling Clutch Orifice Tube

CCW Counterclockwise

CDI Capacitor Discharge Ignition

CEC Computerized Engine Control

CFI Central Fuel Injection

CID Cubic Inch Displacement

CID Cylinder Identification sensor

CIS Continuous Injection System

CIS-E Continuous Injection System-Electronic

CKT Circuit

CLR Clear

CNG Compressed Natural Gas

Page 92 of 1378

JEEP CHEROKEE 1988 Service Repair Manual CO Carbon Monoxide

CO2 Carbon Dioxide

CONV Convertible

CO Carbon Monoxide

CO2 Carbon Dioxide

CONV Convertible

CP Canister Purge

CPA Connector Position Assurance

CPS Crank Position Sensor

CTS Coolant Temperature Sensor

CV Check Valve or Constant Velocity

CVC Constant Vacuum Control

CW Clockwise

CYL or Cyl. Cylinder

Calif. California

Carb. Carburetor

Chrg. Charging

Circ. Circuit

Cntrl. Control

Comp. Compressor or Compartment

Conn. Connector

Cont. Continued

Conv. Convertible or Converter

Cu. In. Cubic Inch

Cyl. Cylinder

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"D" ABBREVIATION TABLE
"D" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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"D" Drive

DBC Dual Bed Catalyst

DC Direct Current or Discharge

DDD Dual Diaphragm Distributor

DERM Diagnostic Energy Reserve Module

DFI Digital Fuel Injection

DIC Driver Information Center

DIS Direct Ignition System

DIS Distributorless Ignition System

DIST Distribution

DISTR Distributor

DK BLU Dark Blue

DK GRN Dark Green

DME Digital Motor Electronics (Motronic System)

DOHC Double Overhead Cam

DOT Department of Transportation

DP Dashpot

DRB-II Diagnostic Readout Box

DVOM Digital Volt/Ohm Meter (see VOM)

Def. Defogger or Defroster

Def. Defrost

Defog. Defogger

Diag. Diagnostic

Dist. Distributor or Distribution

Dr. Door

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"E" ABBREVIATION TABLE
"E" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

Page 93 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual \ \b\ \ \ \ \ \ EAC Electric Assist Choke$

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EAC Electric Assist Choke

EACV Electric Air Control Valve

EBCM Electronic Brake Control Module

ECA Electronic Control Assembly

ECAT Electronically Controlled Automatic Transaxle

ECM Electronic Control Module

ECT Engine Coolant Temperature Sensor

ECU Electronic Control Unit or Engine Control Unit

EDF Electric Drive Fan relay assembly

EDIS Electronic Distributorless Ignition System

EEC Electronic Engine Control

EECS Evaporative Emission Control System

EEPROM Electronically Erasable PROM

EFE Early Fuel Evaporation

EFI Electronic Fuel Injection

EGO Exhaust Gas Oxygen sensor (see HEGO)

EGR Exhaust Gas Recirculation system

EGRC EGR Control solenoid or system

EGRV EGR Vent solenoid or system

EMR Emission Maintenance Reminder Module

ESA Electronic Spark Advance

ESC Electronic Spark Control

EST Electronic Spark Timing

ETR Emergency Tensioning Retractor

EVAP Fuel Evaporative System

EVIC Electronic Vehicle Information Center

EVO Electronic Variable Orifice

EVP EGR Valve Position Sensor

EVR EGR Valve Regulator

EVRV Electronic Vacuum Regulator Valve

Elect. Electronic

Eng. Engine

Evap. Evaporative

Exc. Except

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"F" ABBREVIATION TABLE
"F" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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F Fahrenheit (Degrees)

F/B Fuse Block

FBC Feedback Carburetor

FI Fuel Injector or Fuel Injection

FICD Fast Idle Control Device

FIPL Fuel Injector Pump Lever

FP Fuel Pump

FPM Fuel Pump Monitor

FPR-VSV Fuel Pressure Regulator Vacuum Switching Valve

FWD Front Wheel Drive

Fed. Federal

Ft. Lbs. Foot Pounds

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"G" ABBREVIATION TABLE
"G" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

Page 96 of 1378

JEEP CHEROKEE 1988 Service Repair Manual mm Millimeters

M/T Manual Transaxle or Transmission

MA PFI Mass Air Sequential Port Fuel Injecti

mm Millimeters

M/T Manual Transaxle or Transmission

MA PFI Mass Air Sequential Port Fuel Injection system

MA or MAF Mass Airflow

MAF Mass Air Flow sensor

MAFS Mass Airflow Sensor

MAP Manifold Absolute Pressure sensor

MAT Manifold Air Temperature

MCU Microprocessor Control Unit

MCV Mixture Control Valve

MEM-CAL Memory Calibration Chip

MFI Multiport Fuel Injection

MIL Malfunction Indicator Light

MLP Manual Lever Position

MPFI Multi Point Fuel Injection

MPH Miles Per Hour

MPI Multi-Point (Fuel) Injection

Man. Manual

Mech. Mechanical

Mem. Memory

Mtr. Motor

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"N" ABBREVIATION TABLE
"N" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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N.m Newton-Meter

NA Not Available

NDS Neutral Drive Switch

NGS Neutral Gear Switch

NOx Oxides of Nitrogen

NPS Neutral Pressure Switch

No. Number

Nos. Numbers

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"O" ABBREVIATION TABLE
"O" ABBREVIATION TABLE\
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O Oxygen

O.D. Outside Diameter

O/S Oversize

O2 Oxygen

OC Oxidation Catalyst

OCC Output Circuit Check

OD Overdrive

ODO Odometer

OHC Overhead Camshaft

ORG Orange

OSC Output State Check

Opt. Option or Optional

oz. Ounce

ozs. Ounces

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Page 97 of 1378

$JEEP CHEROKEE 1988 Service Repair Manual "P" ABBREVIATION TABLE "P" ABBREVIATION TABLE�\ \ \ \ \ \ \$

"P" ABBREVIATION TABLE
"P" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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"P" Park

P/C Printed Circuit

P/N Park/Neutral

P/S Power Steering

PAV Pulse Air Valve

PC-SOL Purge Control Solenoid

PCM Powertrain Control Module

PCS Purge Control Solenoid

PCSDM Passenger Compartment Sensor/Diagnostic Module

PCV Positive Crankcase Ventilation

PFE Pressure Feedback EGR sensor or circuit

PFI Port Fuel Injection (see MA SEFI)

PGM-CARB Programmed Carburetor

PGM-FI Programmed Fuel Injection

PIP Profile Ignition Pickup

PNK Pink

PPL Purple

PRNDL Park Reverse Neutral Drive Low

PROM Programmable Read-Only Memory

psi Pounds Per Square Inch

PSPS Power Steering Pressure Switch

PTC Positive Temperature Coefficient

PTO Power Take-Off

PWR GND Power Ground circuit

Pkg. Package

Press. Pressure

Prog. Programmed or Programmable

Pts. Pints

Pwr. Power

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"Q" ABBREVIATION TABLE
"Q" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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Qts. Quarts

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"R" ABBREVIATION TABLE
"R" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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RABS Rear Anti-Lock Brake System

RAC Remote Accessory Control

RAM Random Access Memory

RAP Retained Accessory Power

RECIRC Recirculation

RED Red

RH Right Hand

ROM Read Only Memory

RPM Revolutions Per Minute

Page 98 of 1378

JEEP CHEROKEE 1988 Service Repair Manual RVB Rear Vacuum Break

RWAL Rear Wheel Anti-Lock Brake

RWD Rear Wheel Drive

RVB Rear Vacuum Break

RWAL Rear Wheel Anti-Lock Brake

RWD Rear Wheel Drive

Recirc. Recirculate or Recirculation

Reg. Regulator

Rly. Relay

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"S" ABBREVIATION TABLE
"S" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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SAW Spark Angle Word

SBC Single Bed Converter

SBEC Single Board Engine Controller

SC Super Charged

SCC Spark Control Computer

SCS Air Suction Control Solenoid

SDM Supplemental Restraint System Diagnostic Module

SDU SRS Diagnostic Unit

SEN Sensor

SES Service Engine Soon

SFI Sequential (Port) Fuel Injection

SIG RTN Signal Return circuit

SIL Shift Indicator Light

SIR Supplemental Inflatable Restraint

SMEC Single Module Engine Controller

SOHC Single Overhead Cam

SOL or Sol. Solenoid

SPFI Sequential Port Fuel Injection

SPK Spark Control

SPOUT Spark Output Signal

SRS Supplemental Restraint System (Air Bag)

SS 3/4-4/3 Shift Solenoid circuit

SSI Solid State Ignition

STAR Self-Test Automatic Readout

STI Self Test Input circuit

STO Self-Test Output

SUB-O2 Sub Oxygen Sensor

Sen. or Sens. Sensor

Sol. Solenoid

Sprchg. Supercharger

Strg. Steering

Susp. Suspension

Sw. Switch

Sys. System

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"T" ABBREVIATION TABLE
"T" ABBREVIATION TABLE\
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ABBREVIATION DEFINITION

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T.V. Throttle Valve

TAB Thermactor Air By-Pass

TAC Thermostatic Air Cleaner

TAD Thermactor Air Diverter

TAN Tan

TBI Throttle Body Injection

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