W123, Electrical

A/C Comes on and off periodically

I have an 81 240D and when I turn on the A/C the compressor will kick in and it will blow really cold for a while only when the the analog dial is in the max-a/c position. However periodically it will kick on and off with no real reason behind it. I don't think it's the switch b/c moving it up and down does not fix the problem. It seems as though some part of the system decides its had enough and stops for a while. Anyone have a problem like this? Thanks.

Chassis Model Number

W123

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Body and Interior Specific Aid

Diesel ign. switch problems

I have never really understood, on our 123's, why I have to return the key all the way counter-clockwise if the engine fails to start. Strange voodoo with the vacuum shut-off? A peculiarly odd tuetonic accomodation for the hearing-impaired? What prevents it from functioning. Every now and then I have trouble with the switch stopping before the crank position, no matter what I do. Is this something that popping the cylinder and spraying WD40 would help? It is so intermittent that I could go for weeks without it happening again, or I could get stuck at the drive-up tomorrow. Thoughts?

Forums

Diesel Engine Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W123

transmission compatibility? 1979 300sd to 1980 300d

hi, i have the excellent guide on how to replace transmission, and am about to try this with my dad. he has the transmission out of the parts car, a 1979 300sd, and the torque converter wouldn't come with it (broken timing chain so no turning over). before we take out the badly slipping transmission from my 1980 300d, we're trying to determine compatibility issues. any known problems?? any help much appreciated, thank you! -noah

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

WVO Coversion Miracle

I've been running WVO for over a year now on a competitors system. Finally i got fed up with both the poor engine performance and my secondary WVO tank with heat exchanger built in. (I was starting to get scum build up in the tank from the constant heating and cooling inside. I also have problems with leaks and the fact that it made the temperature of my trunk rise to over 90% after a few hours was getting to me). I pulled out the system and replaced it with a system from mercedessource.com and I get a miracle. The electric boost pump and sump heater supplied by mercedescource are amazing.

Chassis Model Number

W123

Forums

SVO Fuel Conversion Specific Aid

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