Fleetwood FWD V8-300 4.9L (1993)
Housing Assembly HVAC: All Technical Service Bulletins
A/C - Whistle Noise While in Recirculate Mode
Bulletin No.:
T-93-47
File in Group:
1
Number:
93
Corp. Ref. No.:
200106R
Date:
Jan. 1993
SUBJECT:
WHISTLE-TYPE NOISE IN RECIRCULATE MODE (INSTALL CLIP ON RECIRCULATE DOOR)
MODELS AFFECTED:
1992-1993 DEVILLES AND FLEETWOODS (VIN BREAKPOINT P425051)
All 1992-1993 DeVilles and Fleetwoods up to VIN breakpoint P425051 may experience a whistling-type noise when the air conditioning system is in are
circulate mode. The condition is most prevalent at speeds of 45-60 mph (75-100 kph) and may be mistaken for a wind noise from the lower center
section of the windshield.
To diagnose this condition set A/C controls to "Auto" 60~ F. Drive the vehicle at 45-60 mph (75-100 kph) and listen for the whistle noise. Turn the A/C
controls to "OFF". If whistle stops after the turned off, then noise is being generated from outside air/recirculate door (air inlet valve).
To correct this condition install a J-clip, P/N 52466011, on the air inlet valve stop using the following procedure:
1.
Lower left and right hush panels to gain access to air inlet actuator.
2.
Locate the outside air recirculation valve vacuum actuator.