[Joe Harding]

Originally Posted by SteveP

Quite a common problem, shouldn't be any need to swap your dashboard. A fix is documented here:

http://www.volvo300mania.com/uk/foru...hp?f=39&t=4147

I suspect your intermitted speedo is a separate cable related problem

Looking at this post, the thing overlooked is that the gear at the opposite end of the shaft that drives the display digits works loose on the shaft, so pushing the other end back into mesh with the worm gear doesn't solve the problem. I added a blob of superglue to the shaft and refitted the worn gear and it gripped tightly. Few hundred miles later and it's still functional.