my valver is doing my head in my alternator is screwed again, which is the second alternator ive put in it in 5 weeks. The two alternators ive put in were both purchased as a second had part from a renault breakers. just wonderin if you guys reckon its a case of im gonna just have to buy a new one coz second hand ones are no good or wether there is some underlying fault with my car causing it to chew alternators?