Sometimes the bushes or thrust washers go bad or the arm is out of geometry and that causes these issues. Only a good alignment shop with an expert tech doing true 4 wheel alignment can help you out. In my experience, its the tech doing it that matters most so I have my set shops in NY and in India and only patronize them.

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99 Gurkha with OM616 IDI turbo

2015 Gurkha with OM616 DI turbo

2014 Rexton W with OM612 VGT