speedo not working

[CJ_Derv]

hi guys looking at a 1997 306 d turbo and the speedo isnt working but the other dials are. should this be easily sorted? think they said the sensor has already been replaced

cheers

If they said the sensor has been replaced the chances are that the sensor hasnt been put in far enough or has been put in too far,
Jack the car up and support it with a stand, look up back of gearbox and you will see the wire and sensor head held in by a clamp and 10mm bolt,
you want to take it out and inspect the head if its been pushed too far it will be sheered off and need replacing, otherwise push right in and pull out a tad so it isnt sitting on the flywheel.

this should hopefully sort your problem if not PM me and i have a spare sensor

also check the connection where the sensor connect to the main wirring grey plug iir ive had this become lose in the past

Hope this helps
CJ