My pivot mount accelerater wore out on mercedes 300td
the pivot mount accelerator linkage on my mercedes 300td disintergrated and the linkage fell away. i got a new pivot mount and installed it. the accelerator works fine now, however the engine will not stop when i turn the ignition off. i have to open the hood and stop it at the engine. i checked the vacuum lines to see if any came loose. they seemed to be ok. what could be the problem please. the car shut off just fine before linkage fell apart. thank you.