[PJF220]

It's probably one of the speed sensors on the wheels, they are very common faults. Expensive new, something like £70 each, but there are a couple of people breaking turbos on the Rover Coupe Owners Club right now so I'd suggest find the fault code and check out the club web forum. I'm on a warning for advertising the club in my signature despite the number of members here with Rover's I've helped out, so either PM me or do a google search for the web address.