I'm taking a B280 PRV engine apart, to sell the pieces. It's new experience to me, and I wonder about things. there are two sensors in the valley, that look like you need to take most of the upper end to get to. what do they do? and do they fail often? Seems like a nightmare to get to them. thanks Skip To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/