A/C - Thump Noise When Compressor Cycles
TSB 06-12-1206/26/06
A/C COMPRESSOR THUMP NOISE WITH 4.0L V-6
FORD:
2006 Explorer
2007 Explorer Sport Trac
MERCURY:
2006 Mountaineer
ISSUE
Some 2006 Explorer 4dr / Mountaineer and 2007 Explorer Sport Trac vehicles built with a 4.0L V-6 engine and built before 2/7/2006, may exhibit an intermittent thump or similarly described noise transmitted into the passenger compartment in A/C / Auto / Defrost modes, when the A/C compressor engages. The noise may occur when the A/C suction line makes contact with the sheet metal cowl in the engine compartment. The identified thump or similar noise may be audible behind the instrument cluster when driving and may also only occur intermittently under hard accelerations.
ACTION
Use the following Service Procedure to insulate the A/C suction line from contact with the cowl. Apply an adhesive foam block between the A/C suction line and cowl sheet metal in the area of potential contact.
NOTE
A/C COMPRESSORS SHOULD NOT BE REPLACED TO CORRECT THIS CONDITION.
SERVICE PROCEDURE
1. Visually inspect for the presence of a foam block between the suction line and cowl shown in Figure 1.
2. If the foam block is already present, ensure that it is properly positioned to insulate the line from the cowl (Figure 2). If the foam block is present and positioned properly do not continue with this TSB.
3. If the foam block is missing, install one (1). The adhesive side should face the sheet metal of the cowl and should be installed in line with the center of the A/C line ferrel (Figure 2).
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION DESCRIPTION TIME
061212A 2006 Explorer/Mountaineer, 0.2 Hr.
2007 Explorer Sport Trac
4.0L: Install Or Position
Foam Block
DEALER CODING
CONDITION
BASIC PART NO. CODE
19N617 43
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