If the speedometer is only slightly bouncing and you’re confident in your ability to estimate your speed, it might be okay. Diagnose and fix your erratic speedometer A bouncing speedometer can be a real headache, but with a little troubleshooting and some basic repair skills, you can.
Gallery: Lose the Speedometer Bounce with YearOne - Mopar Connection
Solutions for bouncing mechanical cables and failing electronic speed sensors.
Experiencing speedometer jumps and car jerks
Discover the common causes and easy fixes to get your car running. When your speedometer becomes erratic, metal shavings could be the sneaky perpetrator Stop your speedometer needle from jumping Learn how to diagnose cable friction, vss sensor failure, and cluster faults to fix a shaky.