I have a 2000 Ford Focus 1.8. When the engine has warmed up the speedo stops working for 5-20 miles, while the speedo isn't working the odometer and radio don't work properly and the engine loses ...

Everything in my 2001 Renault Clio's dashboard works properly apart from my speedometer. Once it gets to 40mph, the speedo hand becomes shaky and it goes down. When I slow down to 20mph it goes up ...

Our first suspicion would be a bad earth somewhere on the vehicle. Dashboard faults are very often the result of a poor earth contact and the symptoms you describe are spot on for that very problem.

If you've ever performed any kind of driveline or wheel and tire swap, you're probably familiar with speedometer calibration. By stepping up to larger tires and/or wheels, the speedometer reads slow ...

Just three years after introducing the third generation of the Focus, Ford released the refreshed version at the 2014 Geneva Motor Show, and the updated version was significantly improved. When Ford ...