W116, Body and Interior Specific Aid

79 300CD - ID the engine?

I have a 79 300cd, I noticed shortly after purchasing it that it has a transmission vaccum valve [that is not hooked up] mounted on the injector pump, I could not locate a modulator on the transmission,I later read that79 models did not use vacuum for transmission control....hmmm I thought that maybe someone had changed the pump with one from a later model.

Chassis Model Number

W123

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Heater and Tach problem for a 1982 300 CD TD

I found no repair Manuals and/or Diagnostic Guides to diagnose my AC/Heater and Tach problem. My heater does not come on when I want it to come on. Most of the time, nothing. I would press the buttons on the climate control and hear contacts, I would roll the temp setting wheel and hear contacts in AC as well in heating. I have source parts and like to repair it myself. I am willing to do a rebuilt, if possible. The Tach either jump around or does not work or works normally, mostly jumps around. This bothers me

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Chassis Model Number

W123

Recoding a Becker Grand Prix?????

Hi All, I was working on a Heater motor problem and made the tragic mistake of unpluging the radio while attempting to pull the ACC unit. My MB Tech. Companion said my particular radio was equiped with an anti- theft device that scrambles the radio when unsuspecting dolts like myself disconect them. Has anybody got any advise as to how to restore the settings? Thanks Mike Waine

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Chassis Model Number

W126

1986 300e rear suspension stomping noise

1986 300e 5 spd.(Manual) car starts to sway and jumps on high speed. I thought that the rear shock was going bad so I bought the bilstien HD shocks for the rear and have it installed in a local repair shop close to my home.Its much stable on the freeway. But when I drive the car I hear stomping noise on left rear when driving on bumps or pot holes. It feels like the shocks are so stiff it sounds like dug dug dug dug it feels the rear is falling apart could it be the installation not installed correctly. The noise was not there before. what part is worned out to make this noise.

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Chassis Model Number

W124

Wiper Speeds at Combination Switch are backwards

Re: '82 300SD (new car for me). The first wiper position on the combo switch gives fast wiper speed, the second normal speed, and the third does nothing at all. I think the proper order is intermittent, then normal, then fast. Everything else on combo switch works fine. Should I get a new switch? How to I remove it to troubleshoot and/or replace? Need instructions. Thanks!

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Chassis Model Number

W126

103 90' 300E hard to start, idled rough and would quit at stop signs. Frankly, What a piece!

I am posting my condensed experience on this subject to spare other 103 owners from going nuts/broke or both. I bought this PIECE at a good price with the intention of reselling it. It had a "fresh smog certificate" and drove it 300+ miles, I loved and enjoyed the smoothness and I immediatly thought what a great grandmas car(I am a die hard mercedes diesel rattling cage fool: 74 240D 4sp). Anyways the honeymoon stopped abruptly when the car started to show the above symptoms and all other signs of being possessed, I thoght the problem was not "BASIC" tune up related because it flew thru smog.

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Chassis Model Number

W124

Brrrr! 82 300SD Heater Motor goes kaput!

Hey gang! Thanks to Kaia and Mercedessource, we completed our journey from Boulder, CO back to Portland, ME in our just-puchased-that-evening 1982 300SD. We made the trip back to Maine in 34 hours flat, averaging 25 mpg. Thanks to your book(s), we diagnosed a clogged ALDA line heading from the intake to the sensor and wala, bugs no longer hit our back windshield as we crossed Iowa. The only thing, and only thing that really gave us trouble on the trip was, 3/4 way back, the heater motor just QUIT. The gentleman we bought the car from stated that he had replaced the 'control valves' - which I read as he replaced the push button array in the center console (which was confirmed by finding it half-bolted in).

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Chassis Model Number

W126

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