Article No. 99-4-5 
FORD:
 1998 CROWN VICTORIA
MERCURY:
 1998 GRAND MARQUIS

ISSUE:

A "buzzing" and/or "whistling" noise from the RH side of the windshield area while driving at speeds above 80 km/h (50 mph) may be heard on some vehicles. The noise can be heard when the A/C system is in normal A/C or vent mode and stops when the A/C is off or in maximum A/C mode. This is due to air blowing across the cowl vent screen cover near the fresh air inlet causing the vent screen to vibrate.

ACTION:

Apply foam tape between the cowl vent screen and windshield. Refer to the following Service Procedure for details.

SERVICE PROCEDURE
  1. Remove RH side wiper arm.
  2. Remove the screws retaining RH side cowl vent screen. Disconnect window washer hose. Remove cowl vent screen.
  3. Apply 3mm thick x 12mm wide (1/8"x1/2") foam tape to the underside of the cowl vent screen (option: use PVC Tape (Soft Foam) 164-R4901 found in Rotunda Squeak And Rattle Repair Kit 164-R4900. The tape will have to be cut into 12mm wide strips, then positioned end to end). Position the tape along the entire length of the vent screen approximately 5mm (0.25") from the top edge of the screen. The foam tape will be between the cowl vent screen and the windshield when the screen is reinstalled. 
  4. Install the RH side cowl vent screen window washer hose. Position cowl vent screen and install screws. Torque screws to 2.8-5.1 N-m (25-45 lb-in). 
  5. Install RH side wiper arm.
Part Number
 Part Name
(Local Purchase Or Rotunda Squeak And Rattle Kit)
 PVC Tape (Soft Foam)

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

Operation
 Description
 Time
990405A
 Perform Cowl Vent Screen Repair
 0.3 Hr.

DEALER CODING

Basic Part Number
 Condition Code
54018A16
 12

OASIS CODES:

108000, 208000, 208300, 208999, 701000, 702000, 702100, 702300