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1985 Mercedes Benz 300sd Starter

Tiny
TORRES909
  • MEMBER
  • 1985 MERCEDES BENZ 300SD
  • V8
  • AWD
  • AUTOMATIC
  • 140,000 MILES
Well my car runs perfect but today I turn off my car and it wouldn't shut off. The car kept on running with no key in the ignition. So I had to turn it off manually. What should I do to fix this problem?
Thursday, September 11th, 2008 AT 9:34 PM

2 Replies

Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
It sounds like the vacuum pump has gone out, the engine is shut off by vacuum, and when the vacuum pump fails, you have the emergency shutoff, check your vacuum lines coming off of the Pump, make sure everything is hooked up.
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Thursday, March 26th, 2009 AT 11:21 AM
Tiny
DIESELLOVER
  • MEMBER
  • 13 POSTS
Agree that your problem is most likely a vacuum problem. However, you said nothing about having braking problems, so I doubt that the vacuum pump is the difficulty. I have one like yours, same difficulty. Looking at the small vacuum hoses in the area, I found one that the rubber connector had grown brittle and would not keep the two hoses connected. I cut a small section of same size rubber hose, replaced the brittle section and for less than 50c problem solved! Hope this helps!
Best wishes,
Tom
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Monday, December 21st, 2009 AT 7:18 PM

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