BENZ AID - COMMON QUESTIONS AND ANSWERS

middle dash int lights 83 300dt

I have a 84 300dt when I removed the face plate over the heater ac controls (to replace the bulb in the temp wheel) I found one extra bulb socket not in use total of five. one for temp wheel, two and three for vent control, #4 for fan control and one extra in the back not in use all have small 1.2 volt bulb.ps, light in shifter on and working. Any idea what extra socket is for? Question two all four switches across the top of center dash do not light up. (rear light switch, antenna ,sunroof, rear defrost) rear def lights up when activated.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1977 300D coolant leak

Last year my parents bought me a 1977 240d with a 300d engine. I love the car because of its old style and drove it for about 4 months before pools of coolant started to appear under my car. I am wanting to fix my car now that my dad recently passed away and i need to know if anyone could help me by finding out what the cause is. I have had people tell me its a freeze plug behind the engine. All can tell is that its leaking between the engine and transmission. if anyone could answer this for me i would appreciate it and i would know that i must purchase a freeze plug.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1990 190e 2.6 running very rough,

car was not starting, replaced battery, it would turn but not start, replaced fuel filter, still would not start. replaced overload relay 10A fuse, car finally started, but runs very rough and uneven. acceleration is at a minimum, then will race momentarily , then will die back down to a rough idle. can anyone tell me whats going on and what else i can try? i also had the engine replaced a little over a year ago.

Forums

Body and Interior Specific Aid

84 300SD OIL HOSES/LINES

Are the couple of hoses at drivers side of what I think is an oil cooler are those the oil lines? These hoses are like a hydraulic line, alterante between rubber and preformed special metal fittings and shaped metal lines. They appear to be a pre determined length and appear to go back near the trans. If so are they easily replaced? Cost and availability of the lines and do you have a how to guide? I recently used your ignition switch guide and replacement parts. Thank you it was quite helpful. One other question is the oil pan and gasket available through you?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

617 Diesel Injector Lapping Procedure

As I continue my quest for perfect 617 Diesel Injectors & truth I have just learned today that I need to have the internal surfaces of my injectors lapped to remove grime & build-up. . .

Is this something I can do myself (lapping the surfaces) if I take on the task of re-building my 617 injectors w/new Monark nozzles?

How would I do this?

thank you & Happy New Year,

Kieran-

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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