On my usual 32 mile commute on highway at about 65-70 mph, suddenly the front end started shaking violently. Not a mild shimmy but a steering wheel grabbing, car shaking, scare driver thing. Dropped speed to change lanes and go to shoulder--somewhere around 45-50 mph the shaking stopped. I pulled over and looked around. All looked same as usual.

The only front end work I have done is to replace the guide rod mounts and all looked normal there. The tie rods need replacing and will be done soon--maybe this weekend.

I decided to ease on to the office and did so, staying at 50 mph or below. All smooth.

Any guesses?

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1984 300SD 326,997 miles and counting . . . No wait, my odometer is still dead