If, when grabbing the wheel and shaking (not the steering wheel), you feel some looseness as if the wheel isn't tight, I'd take a look at the ball joints as well. But, like the last poster, I'm not expert.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside