i have a rmd electronic speedo.. its fine for about 5 mile then stops working.... it still has power as the mileage is still showing
but not the speed. if i stop for half hour or so, then start its fine for another 5 mile or so.

anyone else have this problem? its very frustrating

it has the magnet on the propshaft... cant see how this could fail then be ok after.

cheers

Send it back.

Sounds like a sensor failure.

If the milrage is showing and increasing as you drive but not speed the speedo has to be faulty.