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  #1  
Old 05-05-2005, 08:28 AM
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Join Date: Apr 2005
Posts: 22
Unhappy Need some help on auto door locks 84 300SD 126 series

well a few days age i heard my auto trunk lock staying running a bit longer than it should it would shut off after awhile but now my door are freaking out the drive side door when i pull it will unlock all the doors but when i push the driver side door lock it will not pull down all the door lock like they use too
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Old 05-05-2005, 11:03 AM
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Join Date: Feb 2005
Location: Kennesaw, GA
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But the driverside door locks? Does pushing down the other door locks lock all the doors? You have a leak or failure in the auxillary vacuum system that controls these locks. I got lucky when I bought my 85 300SD. One of the doors was stuck and the locking mechanism was unhooked. A little WD 40 and putting it back together and the locks work. I still need to take apart the drivers side door and put a little wd 40 on the key mechanism since it is stuck. I hope it is not the axulliary pump. If it is you can probably find one that has been salvaged. Lots of time taking apart the doors and the Miti vac to find a vacuum problem. Lots of luck!
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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

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Old 05-05-2005, 11:09 AM
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 3,957
On mine it was just the little section of flex hose at the pump, in the trunk, that needed replacing. You might be money ahead to check that area first. Hopefully you find something really simple.
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84 300SD 350K+ miles ( Blue Belle )
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  #4  
Old 05-05-2005, 11:38 AM
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Join Date: Aug 2004
Posts: 124
Sometimes it's a crack developing in the line at the door hinge, I spliced mine with a rubber connector after opening up the rubber sleeve. But it's not that bad pulling off the door panel if you end up needing to, feel free to p.m. me if you want some tips, I've pulled mine plenty dealing with windows...
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So far...'76 240 D (sold)
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'83 300SD (p.o.s. waiting on tranny swap)
'82 300SD (could be the keeper)
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