Fulltext TSBs

Technical Service Bulletins

TSB
05-10-11
  • WHITE FLAKES COMING FROM A/C VENTS
Publication Date: May 11, 2005

FORD:
2002-2005 Crown Victoria
2005 Focus
2000-2005 Expedition, F-150
LINCOLN:
2000-2002 Town Car
2000-2005 Navigator
MERCURY:
2002-2005 Grand Marquis

This article supersedes TSB 02-12-01 to update the vehicle model years.

ISSUE:

Some vehicles may exhibit white flakes coming from the A/C vents when the blower motor is engaged. This may be caused by brazing flux utilized in the manufacturing process of the evaporator core.

ACTION:

Using compressed air (90-150 psi), clean the A/C ducts through the registers and blow off the evaporator core through the blower motor opening. Refer to the following Service Procedure.

SERVICE PROCEDURE

NOTE:THE ENTIRE EVAPORATOR CORE SURFACE MUST BE DRY FOR BEST RESULTS.

NOTE:WHILE PERFORMING THIS TSB 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 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

  1. Change mode to full floor.
  2. Ensure temperature is full cold.
  3. Remove blower motor per Workshop Manual Section 412-02.
  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 in the up and down direction, then repeat moving from side to side.

    NOTE:ATTENTION TO THE BLOW-OFF OF THE EVAPORATOR CORE SURFACE WILL DETERMINE EFFECTIVENESS OF REPAIR.

  7. Reinstall the blower motor per WSM Section 412-02.
  8. Open all registers.
  9. Operate the system with A/C on and blower on Max in each mode setting with the temperature full cold and then full warm. Be sure to stay in each mode position for at least 30 seconds to ensure removal of any residual flakes/dust.
  10. Disconnect vacuum cleaner and remove tape from floor duct.
  11. Reassemble floor duct trim.
  12. Blow powder off or vacuum dash board and vehicle interior as required.

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATIONDESCRIPTIONTIME
051011A2000-2005 Expedition/Navigator, 2000-2003 F-150, 2004 F-150 Heritage, 2000-2002 Town Car: Clean A/C Ducts And Evaporator Core1.0 Hr.
051011A2004-2005 F-150, 2002-2005 Crown Vic/Grand Marquis: Clean A/C Ducts And Evaporator Core0.9 Hr.
051011A2005 Focus: Clean A/C Ducts And Evaporator Core0.8 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
1986049

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company’s on-line technical resources.

Copyright 2005 Ford Motor Company