I spun the speedo manually with speed controlled device, and it is bang on up to all speeds, so that is why it must lie in cable or drive pinion.
I even went to the ford dealer to ask about a drive pinion, he said "I need to know how many teeth yours has", so isaid I don't know but onb the 2wd cossie they only have the one that ford used, so he said I will order that then, oh no it's on back order.
I then asked how many teeth has it got, he said "I don't know", so I said well if you don't know how many it has what is the point of asking me how many mine has ?
He wouldn't even serve me until I told him the reg number, despite my telling him it's too old for the system, so he puts the number in then says, "it's too old for the system"!!!
You just can't get the staff these days, he then asked me to leave as I was being awkward!!
tabetha