Subject: | "Hoot" Noise during Light Throttle Deceleration with Engine Speeds Between 3000 and 4000 RPM (Install Damper to Right - Hand Drive Axle) |
Models: | 1992 Saturn SL and SL1 sedans equipped with SOHC (LKO) engines built before, and including VIN NZ221871 |
A noise, similar to a "Hoot," is heard from inside some vehicles during very light throttle deceleration conditions with engine speeds between 3000 and 4000 rpm. Because of the strict drivetrain torque conditions required for this noise to occur, it is usually only noticeable on vehicles equipped with manual transaxles.
The noise is caused by a vibration, that occurs under certain driving conditions, causing the drive axle to resonate.
A dynamic damper has been developed to correct this condition. Refer tot he following procedure for installation of he damper tot he right - hand drive axle. Saturn L and SL1 Sedans equipped with SOHC (LKO) engine and manual transaxles (MP2) beginning with, and including VIN NZ221872 have this damper already installed.
Important: Some vehicles built before, and including VIN NZ221871 have been retrofitted with the damper. Visually check for presence of a damper on the right -- hand drive axle. If the damper is present, the condition and service procedure described in this bulletin does not apply.
Important: Drive shaft must be clean and free of grease to ensure the friction fit damper is secure to the drive shaft after installation.
Notice: When installing the damper, make sure that the pipe used for installation presses on the inner damper ring. Pressing on the outer damper ring will damage the damper.
Material required: Steel or Schedule 40 or higher PVC
Steel (ID): 25.4 mm (1 in.)
Length: 160 mm (6.3 in.)
Good Advice: Lubricate shaft with a liquid detergent (example, liquid dishwashing detergent) to aid in damper installation.
Important: If more than light-to-moderate tapping is required to move the damper, shaft splines or grooves are improperly taped or not enough liquid detergent has been applied.
21011999 -- Damper Kit - Right - Hand Drive Axle
To receive credit for this repair, submit a claim through the Saturn Dealer Systems as follows:
Case Type | Description | Labor Operation Code | Time |
---|---|---|---|
VW | Damper, RH Drive Axle - Install | T9578 | 1.4 hrs |