Stalling problem on a 71 280sl

[j5aown]

Joe,

This solenoid is present on my injection pump and was disconnected a couple weeks ago when I ran across some threads of cars with similar problems, but with no effect unfortunately.  Sounded so promising when I came across it, because thats exactly what it feels like; the fuel is being shut off...

Just out of curiousity, what does the idle throttle switch control?  I started going through the emission control systems and this device failed.

Josh

[Benz Dr.]

So with the vacuum line disconnected the engine runs OK? When you connect the line the engine stalls?

 This is what happened:
Before you fixed the vacuum line you havd no vacuum going to the distrbutor. The ignition timing was set at this point and all you had was mechanical advance which is something like 10 - 15 degrees max.
When you fixed the line and hooked it up now you have 15 - 20 degrees of extra movement ( retard ) and it's pulling the timing way past TDC so the engine won't even run. All you need to do is turn the distrbutor to advance it enough to get the engine to idle properly. Use a timing light to set it to specs after it's warmed up.

[Cees Klumper]

I had similar symptoms to yours (stalling after warming up, over and over again) when I first got my car, now ten years ago when I knew nothing about it. The garage that finally fixed it (Van Dijk here in Holland) told me I had the wrong kind of distributor on the car that was causing incorrect timing, probably just like Dr Benz describes. So when I read your symptoms, after "fuel delivery" I also thought "ignition". I would make sure the ignition timing, dwell, advance/retard etc etc are what they should be, and given that you seem to have all you can/need vis-a-vis fuel delivery, let's hope that puts this very annoying problem to rest.
My car kept dying on me as I was going through heavy Amsterdam down-town traffic, just a week after I got it in the summer of 1999. All eyes on you with your beautiful convertible car, as you are pushing it out of the way, is definitely not a fun memory. At least it induced me to get up to speed (pun intended) on the inner workings and actually is a little bit of the history of how this group got started way back when.
Good luck on the fix and please keep us posted!