Quote:
Originally Posted by DanHoug
well, acquired a tow-home '83 300SD w 280k miles... my first Mercedes! price was right, body decent, last ran in 2014. got it to fire up long enough to drive it to the car wash for an engine wash and remove the barnacles. swore off diesels after putting 140k miles on veg oil with a '91 Jetta converted to WVO. got drawn back into them thru this rescue mission on the Mercedes.
Done List:
oil change
air filter
fuse box rehab/cleaning contacts
oil cap jiggle test: passed very nice
checked turbo bearings, just a slight shake, spins nice, no bad intake vanes
odometer gear rebuild
dash dimmer bridge fix
repaint gauge needles neon orange
clean sunroof tracks
remove crumbly hood insulation
To Do List before hitting road:
re-attach vac line to aneroid and check nipple for free flow
Fuel filters
drain tank + filter
adjust valves
rebuild injectors + check timing
get HVAC blower working
get HVAC controls working
To Do as time permits:
Passenger window motor locked
door locks inoperable
change emergency flasher switch (funky now)
reglue peeling wood trim
sagging drivers seat
electric antenna
-dan
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It could just be that the window switch contacts need to be cleaned (switch comes apart don't loose the ball bearings, springs and rockers). I scrape them with a small pocket knife. Others say not to do that and use some other cleaning method. Your choice.
I don't know if the SD front doors are the same as W123 doors in that the W123 doors have a terminal/junction block where the Motor Wires connect held in with screws. I had both of the 2 screws back out and tightening them returned fixed the no go issue.
It is also a convenient place to test the front window motors. because the wires are right there. Not hard to connect some jumper wires to the motor wires and apply them to a Battery and see if the Motor itself and the regulator are working.
Unfortunately the read doors don't have any terminal blocks on the W123.