[diesel_mercedes] Re: 240D will not shut off

 


Congrats ! this is a nice running , amazingly economical car to run .

On the rear end of the injection pump is a round thing with a brown plastic pipe attached via a 1" or so long rubber hose ~ this hose is prolly soft and blubbery so it's easy to pill off or on , this causes vacuum leaks that prevent engine shut off .

Take this small bit of rubber hose to your local Parthaus and buy at least 2' of it and some wire cutters to trim it with if you don't have any .

Replace the short bit and connect the brown plastic tube , then look at the various plastic hoses connected near the power brake cylinder , ONE AT A TIME , replace each short bit of soft rubber hose then grab your flashlight and peer up underneath the dashboard behind the ignition switch ~ it'll have two brown plastic tubes connected by short rubber hoses, replace both and see if it now halts when you withdraw the key .

An amazing amount if things all over the car operate silently from vacuum so when these little connector bits of rubber hose get oil soaked or stiff , the resulting vacuum leaks cause myriad problems most of which are easy to fix .

Any time you can easily pull off a rubber hose , IT'S BAD and needs immediate replacement , this is why you need to begin with AT LEAST 2'
of new hose .

Be aware that all the hard plastic pipes are color coded , brown for engine shutoff , yellow for the central locking , green for the HVAC
blue for the locking seat backs on Coupes , black for filtered vacuum vents and so on .

-Nate
"waxhawdon" wrote :
>
> New member here. I just bought a sweet running '77 240D.
> It starts and runs great but will not shut off with the key.
> Any ideas?
>

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