Tribute 4WD L4-2.5L Hybrid (2009)
Air Duct: All Technical Service Bulletins
A/C - White Flakes Blow From Vents
Bulletin No: 07-004/09
Last Issued: 07/06/2009
Subject:
WHITE FLAKES COMING FROM A.C VENTS
APPLICABLE MODEL(S)/VINS
2009 Tribute and Tribute Hybrid
DESCRIPTION
Some vehicles may experience white flakes coming from the A/C vents when the blower motor is operating.
This may be caused by flux utilized in the manufacturing process of the evaporator core.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
Using compressed air 90-150 PSI (620-1034 kPa), clean the A/C ducts through the registers and blow off the evaporator core through the blower motor
opening.
NOTE:
^ The entire evaporator core surface must be dry for best results.
^ While performing this procedure and selecting different vent modes such as floor/panel and floor/ defrost, it may be necessary to temporarily start the
engine to enable mode door movement.
CLEAN A/C DUCTS
1. Remove floor duct trim.
2. Using masking tape, connect one end of the vacuum cleaner hose to the floor duct on driver side.
3. Tape closed all the other floor duct openings.
4. Obtain about two feet (61 cm) of rubber vacuum line large enough to fit the end of a small shop air blowgun.
Secure the hose to the end of the blowgun using a worm clamp.
5. Close all instrument panel registers.
6. Set temperature setting to full cold.
7. Place mode in floor/panel.
8. Turn on vacuum cleaner.
9. Working with one register at a time insert the vacuum line down each duct and blow shop air through each duct for 30 seconds. Be sure to close each
register before moving on to the next register.
10. Change mode to floor/defrost.
11. Blow down each defroster duct for 30 seconds.
12. Alternate mode door between floor and floor/defrost three (3) times, giving the door time to move between each change.
13. Turn off vacuum cleaner.
CLEAN EVAPORATOR CORE
