Liberty Sport 2WD L4-2.4L VIN 1 (2002)
Refueling Control Valve: All Technical Service Bulletins
Fuel Tank - Hard To Refuel After A Cold Start
NUMBER: 14-004-01
GROUP: Fuel
DATE: Sep. 28, 2001
SUBJECT:
Difficulty Refueling Vehicle Shortly After A Cold Engine Start
OVERVIEW:
This bulletin involves the replacement of the fuel tank flow management valve.
MODELS:
2002
(KJ)
Liberty
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO SEPTEMBER 17, 2001 (MDH 0917XX).
SYMPTOM/CONDITION:
The customer may experience difficulty when initially attempting to refuel the vehicle fuel tank. The refueling condition will only be present during the
first three (3) minutes following engine start-up, and only if the vehicle engine was started after it had previously cooled to ambient temperatures (a cold
engine start).
If the engine is stopped any time during the first 3 minutes following a cold engine start, difficulty may be experienced trying to introduce fuel into the
fuel tank for approximately the first 20 seconds after the fuel cap has been removed. If the customer fails to stop the engine during the refueling process,
then the refueling difficulty may last longer than 20 seconds after fuel cap removal.
The refueling difficulty is caused by the residual evaporative system pressure created during an OBD2 evaporative system leak test. A revised flow
management valve, in the On-Board Refueling Vapor Recovery System (ORVR), reduces the evaporative system pressure decay time from 20 seconds to
approximately 10 seconds after fuel cap removal.
DIAGNOSIS:
Inspect the fuel and evaporative systems for restrictions and for correct component orientation. If the fuel and evaporative systems are operating
correctly, then perform the Repair Procedure.
PARTS REQUIRED:
REPAIR PROCEDURE:
Refer to the 2002 Liberty Service Manual (p/n 81-370-02060), Flow Management Valve on page 14-6, for complete removal and installation
instructions. The 2002 Liberty Service Manual may be found on the MDS 2.
NOTE:
TAKE CARE NOT TO BEND THE METAL FUEL MODULE ACCESS PLATE. WHILE APPLYING HEAT FROM A HEAT GUN,
CAREFULLY PRY UP ON THE FUEL PUMP MODULE ACCESS PLATE.
NOTE:
VERIFY THAT THE FUEL PUMP MODULE ACCESS PLATE IS SEALED PROPERLY AND COMPLETELY DURING THE REASSEMBLY
PROCESS.
NOTE:
