Fleetwood FWD V8-300 4.9L (1993)
Fluid Pressure Sensor/Switch: Customer Interest
A/T - Buzzing Noise at Idle
Bulletin No.
T-93-21
File in Group
7
Number
246
Corp. Ref. No.
277142
Date
Nov. 1992
SUBJECT:
BUZZING NOISE FROM THE TRANSMISSION AT IDLE
MODELS AFFECTED:
1990-1992 BROUGHAMS 1993 FLEETWOODS WITH HYDRA-MATIC 4L60
Some 1990-1992 Broughams and 1993 Fleetwoods equipped with a Hydra-Matic 4L60 transmission may experience a buzzing noise coming from the
transmission when the vehicle is at idle. The buzzing noise may be noticed more when the vehicle is in reverse at idle.
This buzzing noise may be a caused by the pressure regulator valve oscillating due to oil pressure instability at lower idle rpm.
