Your speedo and rev counter on your peugeot 206 gti 2liter xreg keeps stopping then working again would it be sensor if so where you locate thanks?

The most likely cause of your Peugeot 206 GTI's speedo and rev counter stopping and then working again is a faulty speed sensor. The speed sensor is located on the gearbox, and its purpose is to measure the speed at which the wheels are rotating. If the sensor is faulty, it may be sending incorrect or intermittent signals to the speedometer and tachometer, causing them to stop or malfunction intermittently.

To locate the speed sensor on your Peugeot 206 GTI, follow these steps:

Open the hood and locate the gearbox. It is the large metal housing located in the center of the engine bay, underneath the air filter box.

Once you have located the gearbox, look for a small black sensor with a wire coming out of it. This is the speed sensor. It is usually located on the side of the gearbox, near the top or the bottom.

Disconnect the electrical connector from the speed sensor by pressing the release tab and pulling the connector straight up.

Remove the speed sensor from the gearbox by turning it counterclockwise. Be careful not to drop the gasket that sits behind the sensor.

Inspect the speed sensor for damage or wear. If the sensor is damaged, replace it with a new one.

Reinstall the speed sensor in the reverse order of removal, being sure to install the gasket correctly.

Reconnect the electrical connector to the speed sensor.

Once you have replaced the speed sensor, clear any diagnostic trouble codes from your vehicle's ECU using an OBD-II scanner. This will reset the speedometer and tachometer and allow them to function normally.

If replacing the speed sensor does not resolve the issue, there may be a problem with the wiring, speedometer, or tachometer. In this case, it is recommended to have your vehicle inspected by a professional.