Diagnostics For Driveline Noise And Vibration
WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If vibration is felt through the steering wheel, then the diagnostics detailed below are not applicable. Vibration felt through the steering should be investigated and rectified separately.
In the case of noise and/or vibration from the driveline system, follow the remedial steps set out below:
- Check for metallic debris within the differential units: Remove the differential (front and rear) drain plugs Refer to: DIFFERENTIAL DRAINING AND FILLING
/ DIFFERENTIAL DRAINING AND FILLING
and check for evidence of metallic debris. While it is normal to see smooth graphite or fine grained deposits (see leftside and centre illustrations below), if there is evidence of sharp spikes or shards of metallic debris on the drain plug (see right-side illustration below), then this indicates an internal failure of the differential unit. If there is evidence of sharp spikes or shards of metallic debris on the drain plug, then replace the drain plug as found and replace the differential unit as required. If there is no evidence of metallic debris on the drain plug, discard the old plug, fit a new drain plug and proceed to the next step
- In the case of either noise and/or vibration, loosen off all differential and associated propshaft fixings. Resettle the differential units and then re-tighten the fixings in a diagonal pattern for both differential units and the associated propshafts. Once all the fixings are secured to the correct torque, road test the vehicle and check for any indications of driveline noise or vibration. If noise and/or vibration is still evident, proceed to the next step
- Note the position of the front driveshaft prior to removal. Remove the driveshaft. Once removed, check the axle tube needle roller bearings for signs of damage. If the needle roller bearings are damaged, as indicated by a flattening of the surface of the roller bearings (see illustration below), then both the driveshaft and axle tube should be replaced. If the needle roller bearings are undamaged, the driveshaft should be rotated by 180 degrees (relative to its original installation) and re-fitted. Road test the vehicle and check for any indications of driveline noise or vibration