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Troubleshooting 1982 Mercedes 300D

 
 
jeffw
 
Reply Thu 26 Mar, 2009 07:26 pm
I recently purchase this car and it was badly leaking oil from the front and rear main seals. I hired a friend to replace them and he had difficulty accessing the rear one and had to lift the motor out to get at it. The seals are fine and the motor runs great, but I now have the following problems that I did not have before this procedure:
1 - The glow plug light does not come on at all. The car will start with the aid of starter fluid and will re-start as long as the engine is warm. Once the engine cools down again, it will not start. A suggestions from an earlier post was to check the glow plug fuse. Can anyone tell me where to locate the glow plug fuse in this car? Are there other glow plug connections that would have been interrupted in lifting the motor?
2- The car does not shut off when turning the key to the left. I have to lift the hood to shut it down each time. Does anyone know what to do to correct this problem.
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Rockhead
 
  1  
Reply Thu 26 Mar, 2009 07:37 pm
@jeffw,
I can't give you specifics without looking at a book (don't own that one)

You need to look at the ignition switch / circuit. the key switch signals the glow plug system, AND should kill the run circuit at shut-off.
jeffw
 
  1  
Reply Fri 27 Mar, 2009 05:06 pm
@Rockhead,
after reading an earlier post, I found and replaced the glowplug fuse which solved the starting problem.
Rockhead
 
  1  
Reply Fri 27 Mar, 2009 05:30 pm
@jeffw,
cool. that would have been the bigger of the two troubles, no doubt...

(still guessing the no shut off is mechanical in nature)
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blakepepper13
 
  1  
Reply Sun 12 Apr, 2009 08:46 am
@jeffw,
i have an 83 300D and i had the same problem with the shut off. the problem in my car was that the vacuum hose was disconnected with whatever makes the car shut off. in order to fix this i had to disconnect the vacuum hose that makes the door locks lock/unlock (witch i was fine with because the mechanic wanted to charge to have both fixed and i didnt think it was that big of a deal) but if you pick up one of those handy haynes repair manuals you could look in the trouble shooting section and it should say something about the engine not shutting down (Not 100% but if its not in there its in the book somewhere) GOOD LUCK

and another thing.. DO NOT shift the gears from reverse to drive while the car is still rolling back hahah.. i have been doing that for a while and something broke in the car (Not sure what it is) but now the car doesn't have any forward motion until it shifts itself into 2 or even 3 gear. let me know if you know what the problem is.

GOOD LUCK
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