F 150 Super Crew 2WD V8-4.6L SOHC VIN 6 (2003)
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 I 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:
1. Change mode to full floor.
2. Ensure temperature is full cold.
3. Remove blower motor per Workshop Manual (WSM), Section 412.
4. Turn on vacuum cleaner.
5. Reach into blower opening with vacuum line and proceed to blow shop air for a minimum of 5 minutes, utilizing a very slow sweeping action.
6. Blow the entire core face with an up and down motion, then repeat moving from side to side.
NOTE
ATTENTION TO THE BLOW-OFF OF THE EVAPORATOR CORE SURFACE WILL DETERMINE EFFECTIVENESS OF REPAIR.
7. Install the blower motor per WSM, Section 412.
8. Open all registers.
9. Operate the A/C system in Max mode with the blower on the lowest setting. Monitor the temperature with a thermometer until the lowest temp is
achieved. Switch to vent and monitor the temperature until ambient temperature is reached.
10. Repeat Step 9 three (3) additional times.
11. Switch the blower motor to high speed with the vent mode still selected. white flakes should not come out of the vents. If no white flakes are present
continue to Step 12.
12. Disconnect vacuum cleaner and remove tape from floor duct.
13. Reassemble floor duct trim.
14. Blow powder off or vacuum dash board and vehicle interior as required.
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.
