Jeep Cherokee 2000 Service Manual - Fuel System
FUEL SYSTEM
TABLE OF CONTENTS
page
page
FUEL DELIVERY SYSTEM. . . . . . . . . . . . . . . . . . . . 1
FUEL INJECTION SYSTEM . . . . . . . . . . . . . . . . . . 25
FUEL DELIVERY SYSTEM
TABLE OF CONTENTS
page
page
DESCRIPTION AND OPERATION
PCM VIN REPROGRAMMING . . . . . . . . . . . . . . . . 1
FUEL DELIVERY SYSTEM . . . . . . . . . . . . . . . . . . . 1
FUEL PUMP MODULE . . . . . . . . . . . . . . . . . . . . . . 2
FUEL PUMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FUEL GAUGE SENDING UNIT . . . . . . . . . . . . . . . . 3
FUEL FILTER/FUEL PRESSURE REGULATOR. . . . 3
FUEL TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FUEL INJECTORS . . . . . . . . . . . . . . . . . . . . . . . . . 4
FUEL INJECTOR RAIL/FUEL DAMPER—2.5L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FUEL RAIL/FUEL DAMPER—4.0L ENGINE. . . . . . . 5
FUEL TANK FILLER TUBE CAP . . . . . . . . . . . . . . . 6
FUEL TUBES/LINES/HOSES AND CLAMPS . . . . . . 6
QUICK-CONNECT FITTINGS . . . . . . . . . . . . . . . . . 6
DIAGNOSIS AND TESTING
FUEL PUMP PRESSURE TEST . . . . . . . . . . . . . . . 6
FUEL PUMP CAPACITY TEST . . . . . . . . . . . . . . . . 7
FUEL PRESSURE LEAK DOWN TEST . . . . . . . . . . 7
FUEL PUMP AMPERAGE TEST . . . . . . . . . . . . . . . 8
FUEL GAUGE SENDING UNIT . . . . . . . . . . . . . . . 10
FUEL INJECTOR TEST . . . . . . . . . . . . . . . . . . . . 10
SERVICE PROCEDURES
PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . 10
QUICK-CONNECT FITTINGS . . . . . . . . . . . . . . . . 10
REMOVAL AND INSTALLATION
FUEL FILTER/FUEL PRESSURE REGULATOR . . . 13
FUEL PUMP MODULE . . . . . . . . . . . . . . . . . . . . . 14
FUEL PUMP INLET FILTER . . . . . . . . . . . . . . . . . 15
FUEL GAUGE SENDING UNIT . . . . . . . . . . . . . . . 16
FUEL INJECTOR RAIL/FUEL DAMPER—2.5L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FUEL INJECTOR RAIL/FUEL DAMPER—4.0L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
FUEL INJECTORS . . . . . . . . . . . . . . . . . . . . . . . . 19
FUEL TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FUEL TANK FILLER TUBE CAP . . . . . . . . . . . . . . 21
ACCELERATOR PEDAL . . . . . . . . . . . . . . . . . . . . 21
THROTTLE CABLE . . . . . . . . . . . . . . . . . . . . . . . 22
SPECIFICATIONS
FUEL TANK CAPACITY . . . . . . . . . . . . . . . . . . . . 23
FUEL SYSTEM PRESSURE . . . . . . . . . . . . . . . . . 23
FUEL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . 23
TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . . . . 24
DESCRIPTION AND OPERATION
PCM VIN REPROGRAMMING
OPERATION
USE THE DRB SCAN TOOL TO REPROGRAM
THE NEW POWERTRAIN CONTROL MODULE
(PCM) WITH THE VEHICLES ORIGINAL IDEN-
TIFICATION NUMBER (VIN) AND THE VEHI-
CLES ORIGINAL MILEAGE. IF THIS STEP IS
NOT DONE, A DIAGNOSTIC TROUBLE CODE
(DTC) MAY BE SET.
FUEL DELIVERY SYSTEM
DESCRIPTION
The fuel delivery system consists of:
•
the fuel pump module containing the electric
fuel pump, fuel filter/fuel pressure regulator, fuel
gauge sending unit (fuel level sensor) and a separate
fuel filter located at bottom of pump module
XJ
FUEL SYSTEM
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