Isolating Vibration
Notice: Some engine/transaxle
combinations cannot be balanced in this manner due to restricted access or limited clearances between the torque converter bolts and the engine. Ensure that the bolts do not bottom out in the lug nuts or the torque converter cover which could dent and cause
internal damage.
To isolate and correct a flywheel or torque converter vibration, separate
the torque converter from the flywheel to determine if vibration is in
the engine or transmission.
- With the engine at idle speed and the transmission in PARK or
NEUTRAL, observe the vibration.
- Turn the engine OFF.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove the transmission converter cover bolts and the cover. Refer
to
Transmission Replacement
.
- Mark the relationship of the converter to the flywheel.
- Remove the bolts attaching the converter to the flywheel. Refer
to
Transmission Replacement
.
- Slide the torque converter away from the flywheel.
- Rotate the flywheel and torque converter to inspect for defects
or missing balance weights. Refer to Engine Flywheel Cleaning and Inspection
in Engine Mechanical - 2.2L (L61).
- Lower the vehicle.
- With the engine at idle speed and the transmission in PARK or
NEUTRAL, observe the vibration. Refer to Diagnostic Starting Point -
Vibration Diagnosis and Correction in Vibration Diagnosis and Correction.
- Turn the engine OFF.
Indexing Torque Converter
To determine and correct a torque converter vibration, the following
procedure may have to be performed several times to achieve the best possible
torque converter to flywheel balance.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Rotate the torque converter one bolt position.
- Align the torque converter hub (1)
in the engine crankshaft (2) and install the torque converter to
flywheel bolts. Refer to
Transmission Replacement
.
- Lower the vehicle.
- With the engine at idle speed and the transmission in PARK or
NEUTRAL, observe the vibration. Refer to
Noise and Vibration Analysis
.
- Repeat this procedure until you obtain the best possible balance.
- Install the transmission converter cover bolts and the cover.
Refer to
Transmission Replacement
.