When I come to a stop at the top of a steep hill, my 560SEL has a rather "bouncy" idle. The idle on flat or minor inclines is very smooth, it's only bad on steep hills. The tach doesn't jump or anything, what could be causing this problem? Is this something I should worry about? It is rare that I am stopped at such a steep hill, however I live near San Francisco...so it does come up once in a while. Any advice would be appreciated
Justin