Back again, followed much of the earlier advise on our 1994 530i which only idles rough when it is cold. Replaced both oxygen sensors, Mass Air Flow. Codes still show Oxygen sensors, and an FF code, which is not in the book. Looked over most all of the engine, and can not find any vaccum leaks. Could the idle air control value be bad or do you think there is a manifold gasket leak? Any ideas would be appreciated.
Ken
Ken