My Ford Focus' engine management light has come on and it's shuddering - what's gone wrong?

My Ford Focus 1600 Zetec's engine management light has started to come on, then the speedo goes to zero. Even the little LCD window on the speedo reads nothing. The miles dont register and the engine starts to shudder. It rights itself after a few miles.

Asked on 29 August 2010 by byers 57

Answered by Honest John
Probably the oil seal to the final drive speed sensor has failed. Replacing it is a £100 job.
Similar questions
Everything in my 2001 Renault Clio's dashboard works properly apart from my speedometer. Once it gets to 40mph, the speedo hand becomes shaky and it goes down. When I slow down to 20mph it goes up again,...
I have a high mileage 2000 Ford Focus 1.4 model. My speedo keeps dropping to 0 and I lose the mileage data at the same time. Does anyone have any ideas?
My Ford Focus Zetec has recently started losing power whilst I am driving and the speedometer drops to zero. The car still moves but is very slow, and then after a few seconds the speedo jumps back up...
Related models
Superb blend of keen handling and ride comfort. Seats five in comfort. five-star Euro NCAP crash test rating.

Ask Honest John

Value my car