Thread: 1981 300sd
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Old 04-25-2003, 11:21 PM
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kweimer kweimer is offline
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Join Date: Dec 2001
Location: Conyers, Georgia
Posts: 110
Question 1981 300sd

Up until this past Saturday I would not even consider buying a Mercedes later than 1976; however, at an impound auction I started the bidding process on a 1981 300SD and ended up with "the buy of a lifetime". I am in the process of repairing obvious things and need to fix the glow-plug system before I can start it---related to the glow plug system is fuse #15 which blows as soon as I connect the battery---I will have to track this down ; however, one item that immediately grabbed my attention was this: As soon as I connect the battery, the locking system begins a lock-unlock cycle and will continue this cycle until I disconnect the battery. I thought the locking system was vacuum operated---and this car has not run in a long time, so there should be no vacuum built up in the system. Can any 300SD owners clue me in as to what is happening here?
K. Weimer
300SD (1)
300D (5) [Plus 1 parts]
300SEL 4.5 (2)
280SE (4)
280 (2)
250 (1)
250SE (1)
240D (7) [Plus 1 parts]
220D (11) [Plus 3 parts]
200D (2) [Plus 1 parts]
180c (with sunroof)

1995 Nissan UD1800 rollback
"If I can't fix it, it don't get fixed"
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