BENZ AID - COMMON QUESTIONS AND ANSWERS

85 300TD starter motor will not engage w/key

Ok...here's the problem: one day, the starter motor failed to engage w/key. We had already replaced the ignition switch due to another issue and it's ok (also tried a spare I had on hand...still no go.) Then, we replaced the park/neutral switch (an ordeal...and it wasn't even bad!)...still no start. I can jump the two terminals on the passenger wheel well and the starter works great. Any ideas where to go from here? I'm almost ready to rig up a pushbutton start!

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

79 240d slow cold oil pressure

I've asked this before, so I guess this is an update. My 79 240d takes forever (5 to 10 seconds) to show oil pressure. Kent asked if I'd changed the tube o'rings in the oil cannister.I did, but thought maybe I should pull it out and double check and make sure they were good.
The o'rings were fine, but there was no oil in the cannister.Shouldn't there be oil in the cannister after the car sits for awhile?

What holds the oil in the cannister!?
Anyone know?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

'79 wagon lower trim fix

yesterday the lower trim (rubber 'n chrome) strip fell off my driver's side door. the front end of the trim piece seems to have a little clip that is rusty but intact, but the rear end of the trim piece just has a rusty hole on its back side. i popped the little cover off the rear bottom of the passenger side door to see what it *should* look like and there is a little nut that seems to connect to a small threaded pin that is attached to the trim piece. obviously, that threaded pin has rusted away from my passenger-side trim piece. do you sell a replacement part for this, or do i need to A) buy a new (or used) whole piece of trim or B) jerry-rig something?

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

instructions for installing new door adjustment switch on '82 300SD

I ordered this kit from Mercedes Source. You have to solder in the wires into this kit for a new electrical switch for the drivers power seat adjustment. But it didn't come with instructions. I have done soldering before but I would like a few tips on how to do this right the first time without messing anything up. For one thing, there is no crimping involved right? Aside from a soldering iron, I shouldn't need any special tools right?

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

Engine won't shut off instantly/'82 300SD

It looks like I might have a vacuum leak. After turning off the engine via the steering column the engine still runs for about 2 seconds. If I press on the diesel pedal the engine will actually speed up a little then shut off. I would would like to know: Is the system under positive pressure or negative pressure? How do you test the fuel pump stop diaphragm to see if it holds pressure? Also the door locks still work but the brake booster isn't as effective recently as I have been having these problems.

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

91 350SDL -- oil in the intake manifold

I found that there is a lot of engine oil droplets coming into the intake manifold...and think it must be bad oil seals in the turbo.

I am working through 350SDL issues and found the solid hose broken that goes between the air intake (pressure side) and the mechanical accuator that opens the waste-gate. I am assuming that this has caused the previous drivers to drive it over-pressured. Would that impact the turbo oil seals so that they could now be leaking into the intake air? Are there other things I should check knowing this has happened?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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