Hi I've got a mk2 gti pb engine code and the oil buzzer has started to go off every now and then, wierdly when it happens the revs hit 3K but normaly my rev counter doesnt work it just seems to flicker just before the buzzer sounds? I've checked for any lose wires all seems ok. I keep meaning to rewire my rev counter but didnt think it would be connected to buzzer?? I guess the oil sensor maybe?