172 Speedo fault

[Hackt1v1zt]

Noticed that my speedo keeps dropping, so it will start off fine when I turn the car on but it seems that when I get into gear 4 or 5 the pin drops to zero. It also feels like there is a change in power when the pin drops. Notice it the most on the motorway. Any suggestions to what it could be ?

 

[NorthloopCup]

Start simple and replace the speedo drive sensor that’s on the gearbox. It’s the usual culprit for this fault, as it’s a mechanically driven electronic sensor.

 

[Hackt1v1zt]

Could that also have something to do with the change in power ?