Yeah, I have a 1980 320i, and I've been told my warm-up regulator also needs to be replaced. I don't know if it's that, or the cold-start valve. Both parts are available at expressautoparts.com for $81 and $71 respectively. Since I am on a budget, I am not layig out any cash until I know what my problem is. If anyone could help clear up what these two parts do, it would be greatly appreciated here.