P reg vauxhall corsa cuts out when engine management light comes onA.so speedo clock has stoped working.anybody help?

Just had the same thing, engine cut out after 15 miles, depending on how long i leave it before turning the engine over again depends how long it will stay running.

Resolved by replacing the crank shaft sensor.

After the machanic replaced the crank sensor, I now have no speedo or cigarette lighter.. not sure about that one.