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300SD steering "wander" problem ??
My 1983 300SD with 350,000 miles tends to "wander" / weave from side to side at highway speed when on a stretch of road that has grooves (running paralel to the road).
Would the cause be most likely a worn out steering gearbox or the idle arm bushing (or both). I had difficulties before trying to adjust the nut on top op the steering gearbox and finally settled on what was tolerable because I could not achieve ideal.
I replaced the steering shock absorber 3 years ago.
Any thoughts? Thanks, Dieter
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Recommendation
Hi Dieter, At that mileage there is a good chance that most of your front suspension rubber parts and joints are worn/worn out. The cumulative affect is the wander you are now experiencing.
I would start with your suspension wear parts first. Replacing the steering gear box should be the last thing you do. Take your car to a good front suspension shop for an alignment and ask them to check for wear at the ball joints, lower control arm bushings, brake control rod support bushing, idler arm and upper control arm. They may come back and say they can not even align your front end because of worn parts. Then ask them what they would charge if you supply the parts. We have a complete kit as well as individual parts at great savings over retail. CLICK HERE to see our complete 126 chassis front suspension parts breakdown. Kent