Need some help diagnosing a strange front-end noise on my 2020 Mitsubishi Pajero 3.8 GLS (approximately 100,000 km).
Recent work completed:
- Front shock absorbers replaced due to oil leakage.
- Stabilizer bar bushes replaced.
- Suspension inspected and wheel alignment completed.
Current symptom:
- Intermittently I hear a "grrrr" sound from the front of the vehicle, almost as if something is winding up or building tension.
- After a few seconds there is a noticeable "THUD" or release.
- When the thud occurs, the front portion of the vehicle can be felt shaking slightly.
- The sound seems to originate from the front suspension/drivetrain area.
- It is much more noticeable inside the cabin than outside the vehicle.
- Steering, handling, acceleration and braking all feel normal.
Very important observation:
- The thud most commonly occurs when the vehicle is coming to a complete stop under braking.
- Sometimes I hear the grrrr sound first, then after the vehicle settles or stops, the thud occurs.
- The symptom is intermittent and does not happen every time.
What has already been checked:
- CV boots appear intact.
- Steering rack boots appear intact.
- Front shocks have been replaced.
- Stabilizer bar bushes have been replaced.
- Wheel alignment is within specification.
Questions:
1. Has anyone experienced a similar "grrrr then thud" symptom on a Pajero?
2. Could this be caused by lower control arm bushes, steering rack mounts, brake caliper movement, engine/transmission mounts, or something else?
3. Since the noise often occurs during the final phase of braking, could suspension or driveline load transfer be contributing?
4. What specific components would you inspect next before replacing more parts?
Any advice from Pajero owners or technicians would be greatly appreciated.