Hey guys.

So for about the past 3 weeks I have been putting up with my speedometer acting up. It will either...

1.) Not work what-so-ever.
2.) Try working but will be inacurate
3.) Work fine (20% of the time)
4.) Work fine, then stop working lets say at 80km/h and will stop. Next start up the truck will think that it is at zero (even though it's still at 80), so another 80km/h and it reads 160km/h.

Whats the problem here guys?

Thanks.