View Single Post
Old 04-18-2003, 03:07 PM
Fimum Fit
Posts: n/a
On middle-aged Mercedes,

the shut-down valve is controlled by vacuum from an accessory pump (and thus minor vacuum leaks can cause the sort of "unstoppablility" you describe -- if you don't know about the lever labeled "STOP" under the hood -- there are a lot of threads on this site which begin with a panicy post from someone who can't shut his car off) rather than by electricity, like VWs, etc. Some of the really old ones had cable or linkage operated shut-offs, like on the Bosch injection pumps on a lot of farm tractors.
Reply With Quote