i got a brava 1-4 s .r-reg it has low power i changed the lamba senor plug and leads i,v tryed super unleaded to see if the konock senor is working properley so i need to no were the crank shaft senor is and how to clean it or how fit a new one
it will be at the bottom of the engine, drivers side (if you are UK), near the oil filter, and oil pressure switch. Its a plastic coated sensor pointing towards a groved ring.