[RKDinOKC]

Cable did that on the Audi I had. Until it started making noise it was kind neat. It didn't bounce around, instead it moved up and down in jumps that lined up with the dashes. It still registered the correctly speeds. It made it look like a quartz movement. When it started making noise, I pulled it and pulled the cable out of the sleeve, greazed it up, and re-installed. Stopped the noise and smoothed out the "quartz movement."