Holy ****! I just had a nice little runaway of my own. Ive been working on my 300SD '79, and just got it started. Suddenly, it went ROAAAAARRRRRRR!!!!

Good thing I read up in this forum beforehand - I had the air cleaner/ducting away from the turbo and I used my Chiltons to choke out the motor. Truthfully, thats been about the only thing that the Chiltons is good for!

I just had the pump out BEFORE this happened, so I removed the shutoff solenoid and ensured that it was latched appropriately. I threaded the hook portion through the eye of the lever inside and re-installed it. Also, before I re-installed it, I applied vacuum to the switch and it seemed to move like it should..... I dont really know why it ran away