Diagnosis By System
Symptom ChartNoise is at constant tone over a narrow vehicle speed range. Usually heard on light drive and coast conditions.
Possible Source(s):
^ Rear drive axle.
Action(s) to take:
^ For addition information , GO to Pinpoint Test G544822p1 PINPOINT TEST G544822p1: DRIVESHAFT ALIGNMENT
Noise is the same on drive or coast
Possible Source(s):
^ Road.
Action(s) to take:
^ Normal conditions.
Possible Source(s):
^ Worn or damaged driveshaft joint.
Action(s) to take:
^ INSTALL new components as necessary.
Possible Source(s):
^ Driveshaft center bearing.
Action(s) to take:
^ INSTALL new components as necessary.
Possible Source(s):
^ Wheel bearing.
Action(s) to take:
^ CHECK and INSTALL a new wheel bearing as necessary.
Noise is produced with the vehicle standing and driving
Possible Source(s):
^ Engine.
Action(s) to take:
Engine
Possible Source(s):
^ Transmission.
Action(s) to take:
Loud clunk in the driveline when shifting from reverse to forward
Possible Source(s):
^ Transmission calibration.
Action(s) to take:
^ Using the Jaguar approved diagnostic system, re-configure the Transmission Control Module (TCM) with the latest available calibration.
Possible Source(s):
^ Transmission Mount.
Action(s) to take:
^ INSPECT and INSTALL new transmission mounts as necessary.
Possible Source(s):
^ Transmission.
Action(s) to take:
Possible Source(s):
^ Suspension components.
Action(s) to take:
^ INSPECT and INSTALL new suspension components as necessary.
Possible Source(s):
^ Backlash in the driveline.
Action(s) to take:
^ INSPECT and INSTALL new driveline components as necessary.
Possible Source(s):
^ Engine idle speed set too high.
Action(s) to take:
^ Check and adjust the idle speed as necessary.
Possible Source(s):
^ Engine mount.
Action(s) to take:
^ INSPECT and INSTALL new engine mounts as necessary.
Clicking, popping, or grinding noises
Possible Source(s):
^ Inadequate or contaminated lubrication in the rear drive halfshaft constant velocity (CV) joint.
Action(s) to take:
^ INSPECT, CLEAN and LUBRICATE with new grease as necessary.
Possible Source(s):
^ Another component contacting the rear drive halfshaft.
Action(s) to take:
^ INSPECT and REPAIR as necessary.
Possible Source(s):
^ Wheel bearings, brakes or suspension components.
Action(s) to take:
^ INSPECT and INSTALL new components as necessary.
Vibration at highway speeds
Possible Source(s):
^ Out-of-balance wheel(s) or tire(s).
Action(s) to take:
^ BALANCE and INSTALL new wheel(s) and tire(s) as necessary.
Possible Source(s):
^ Driveline out of balance/misalignment.
Action(s) to take:
Possible Source(s):
^ Driveshaft center bearing touching body mounting point.
Action(s) to take:
^ Check for correct spacer washer thickness.
INSPECT and INSTALL new washers as necessary.
Shudder, Vibration During Acceleration
Possible Source(s):
^ Powertrain/driveline misalignment.
Action(s) to take:
^ CHECK for misalignment.
INSTALL new components as necessary. For driveshaft alignment, GO to Pinpoint Test G544822pl.
Possible Source(s):
^ High constant velocity (CV) joint operating angles caused by incorrect ride height.
Action(s) to take:
^ CHECK the ride height and VERIFY the correct spring rate.
INSTALL new components as necessary.
Lubricant Leak
Possible Source(s):
^ Rear drive axle breather.
Action(s) to take:
^ Check oil level and correct as necessary.
Possible Source(s):
^ Damaged seal.
Action(s) to take:
^ INSTALL new components as necessary.
Possible Source(s):
^ Rear drive axle filler plug.
Action(s) to take:
^ INSTALL new components as necessary.
Possible Source(s):
^ Rear drive axle rear cover joint.
Action(s) to take:
^ INSTALL new components as necessary.