Explorer 4WD V8-4.6L VIN W (2002)
Hose/Line HVAC: Customer Interest
A/C - Moan/Buzz/Groan Noise From Vehicle Rear
TSB 04-24-6
12/13/04
NOISE DURING A/C OPERATION FROM REAR OF
VEHICLE
FORD:
2002-2005 Explorer
LINCOLN:
2003-2005 Aviator
MERCURY:
2002-2005 Mountaineer
ISSUE
Some 2002-2005 Explorer 4dr/Mountaineer and 2003-2005 Aviator vehicles built before 10/15/2004 equipped with rear air conditioning may exhibit a
whistle/moan/groan/buzz noise coming from the rear evaporator core area. This condition is usually intermittent and is typically present on light throttle
application.
ACTION
Inspect A/C lines for possible grounding. If the source of the noise cannot be pinpointed through normal diagnostics, replace the rear thermostatic
expansion valve (TXV).
SERVICE PROCEDURE
NOTE
FOR STEPS 1, 5 AND 6, REFER TO WORKSHOP MANUAL SECTION 412-00.
1.
Recover the refrigerant.
2.
Disconnect the LH quarter trim panel and gently pull cover back to expose rear lxv. Refer to Workshop Manual Section 501-01.
NOTE
IT IS NOT NECESSARY TO REMOVE THE LH QUARTER TRIM PANEL FROM THE VEHICLE.
3.
Remove the rear TXV.
4.
To install, reverse the removal procedure. Torque the rear TXV nut to 17 lb-ft (23 N.m).
5.
Lubricate the refrigerant system with the correct amount of clean PAG oil.
6.
Evacuate, leak test and charge the refrigerant system.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION
DESCRIPTION
TIME
042406A
Replace The Rear
1.5 Hrs.
Thermostatic Expansion
Valve (Includes Time To
Inspect Lines And
Recover, Evacuate And
Charge The Refrigerant
System)