A/C - Front Blower Motor Whistling Noise
TSB 07-12-606/25/07
FRONT BLOWER MOTOR WHISTLE NOISE -
VEHICLES BUILT ON OR BEFORE 06/7/2007
FORD:
2006-2007 Explorer
2007 Explorer Sport Trac
MERCURY:
2006-2007 Mountaineer
ISSUE
Some 2006-2007 Explorer, Mountaineer and 2007 Sport Trac vehicles built on or before 6/7/2007 may exhibit a whistling noise from the instrument panel coming from the front blower motor. Typically, the noise will occur when the blower motor is set to high speed, the air recirculation is deactivated (fresh air mode) and when the climate control temperature is set to cold. The noise is due to an air gap in the blower motor housing at the electrical connector.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
To service, first verify if the noise is coming from this location. If the noise is coming from this location, seal the air gap. Refer to the following Concern Verification method and Repair Procedure.
Concern Verification
1. Locate the blower motor behind the dash panel on the right hand side.
2. With the front blower motor running, place an object (such as a shop-towel) on top of the area behind the motor connector. There should be a change in the noise frequency, or the noise may completely stop, but will return after clearing the area behind the electrical connector.
Repair Procedure
NOTE
IT IS NOT NECESSARY TO REMOVE THE MOTOR FROM THE INSTRUMENT PANEL TO PERFORM THIS PROCEDURE.
1. Lower the glove box compartment.
2. Disconnect the motor's electrical connector.
3. Apply Motorcraft� Clear Silicone Rubber (TA-32) using a fine pointed nozzle in the area behind the electrical connector (Figure 1).
4. Reconnect the electrical connector.
5. Reassemble.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT:
Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
071206A 2006-2007 0.3 Hr.
Explorer/Mountaineer, 2007
Explorer Sport Trac: Apply
Silicone Following Service
Procedure Includes Time
To Verify Concern
DEALER CODING
CONDITION
BASIC PART NO. CODE
19805 12
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