Last night I was in the turning lane, waiting for the light to change, and I noticed that my speedometer was repeatedly "revving" from zero to forty. I was at a complete standstill and the engine tach was registering a rock-solid 6k rpm (where it's set). I pulled over and let the car "take a break", and it hasn't done anything like it since, but it weirds me out.

Time for a new instrument cluster or something more sinister at play?

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Ethan Hunter
1986 Mercedes-Benz 300SDL (263,000 miles)