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m104

  1. RichardF

    1994 SL320 M104 misfire

    Fine one day, then idle went awol and misfire started, felt like 2 cylinders but may have been one. Total mileage driven with miss about 4 miles. Took car home and left it, whilst errands run in spare car. Several hours later I started it miss still there, I ran a diagnostic blink code...
  2. MB-tex

    W124 M104 idle issues

    Hi all my 1996 e280 is giving me issues and is currently in the shop. I don't like it when a car has to stay in overnight! Basically car has been failing to start then starting first time later in the day. Also coming off a roundabout it has felt like it lost power until car was level...
  3. poormansporsche

    Anyone after a M104 Manual ECU ......

    MERCEDES BENZ W202 C280 SPORT AMG RARE MANUAL 24V | eBay
  4. B

    M104 engine swap into W201

    hi I am currently working on a my W201 2.6 project car. from my search I limit the option for an engine swap between the M104.980 from w124 300ce 24v and the M104.990 from a W140 320. my question is with the difference between the two engines the swap of 1- the M104.980 should be direct one...
  5. D

    Turbo??

    just joined here friend of mine mentioned this is the best place for answers :) I am looking for some help,in finding a turbo kit of some kind for an M104 . looking to get more power out of a 1997c280. any help(website)would be greatly appreciated thx Scott
  6. Celicasaur

    W124 M104 engine upper wiring loom

    I just replaced my loom for a new genuine MB item as part of a long-term restoration project that I'm doing on my cabriolet. Selling my old loom to anybody who wants a cheap/quick fix to get them out of a pickle on their car. The loom is showing signs of being quite tired and has the usual...
  7. bh13coupe

    M104 Starts then falters when dropping to idle

    Hi Guys I have some serious issues with my M104 maintaining tickover. I can get the car started no problems and the car goes to the immediate higher RPM (approx 1100 RPM). What I am experiencing next is the RPM then drops down to tickover 600RPM as normal and then the car conks out. It...
  8. D

    M104 swap

    Hi guys. I have a 2.3 8v w201 I'm looking to swap the motor out with a m104 3.2. I need a detailed outline on the conversion please. All help will be appreciated Thanks Naushad
  9. Z

    Help with indentifying cable on m104 engine harness

    I need help to identifying a cable that are connected to e main connector for the engine harness it's a coxial cable and i have tried to take a picture where its goin. But i haven't been able to find the end postition of it i have taken a picture from where it's start and where it's goin...
  10. XJguy

    M104 rattle noise coming from top front of engine

    Ive checked all the codes (none), tensioners look fine, car runs great. RPMs are good, oil pressure good, power good, car starts up with no problems, has new harness, new motor mount, all fluids changed at regular intervals. But when in gear, and stopped there is a rattle coming from what seems...
  11. C

    M104 300-24 in a W201 conversion

    I've been reading many posts on this forum and others regarding the conversion and fitment of a 3.0ltr engine into a W201. Having been toying with the idea of fitting a bigger lump to my M103 2.6 engined W201 for some months, a good condition 300-24 engine has come available local to me...
  12. coupe addict

    M104 optimum running temperature

    I recently changed the thermostat on my C124 e320 coupe, thinking that the old one was sticking. It had been running at about 80 according to the gauge; now its running at an indicated 75, even on long fast runs. The cabin heater is a little slow to reach the comfort zone, but otherwise I see...
  13. BAZ-500SL

    How to tension m104 timing chain

    Hello Right a slight issue I have come across when fitting the timing chain to my 320ce w124 (m104 engine) it's all lined up but I'm having difficulties tensioning it up, also there is a clutch cam that I'm a bit unsure on how it fits, all help appreciated in advance also any diagrams or how...
  14. RichardF

    Resonance valve M104 HFM

    I'm carrying out some maintenance and I have removed the resonance valve. 94 SL 3.2 It has a rubber nipple by the electrical connection, that just vents to the atmosphere, when I suck it operates the valve. Is this correct? I can't find a loose vacuum pipe it could connect to.
  15. mark_le_b

    M104 Air Filters x 2 - A1040940104

    Hi I have a couple of air filters on e-bay as per title Any use to anybody? MERCEDES SMALL JOB LOT OF 2 AIR FILTERS FOR M104 ENGINES NEW GENUINE A1040940104 | eBay Thanks
  16. poormansporsche

    WTD Mint Prefacelift C280 M104 Wagon,Azzurite,C36 Kit,Monoblocks,AMG Exhaust & Spats!

    Must be rust free and low mileage ! If you have one let me know - top money paid . . . . . . . . . . . . . Pretty specific I know but the car does actually exsist as ive seen it ! Its driven by a couple of old biddies you never know they may be members on here or someone...
  17. MB-tex

    M104 advice needed

    Hi All I need some advice on an occasional symptom of my 2.8 M104 motor. I have had it 4/5 yrs and this has happened maybe 4 times. Motor has done just over 200000 miles and is totally reliable. Oil level good. Slight leak in gasket somewhere but otherwise faultless. Oil changed every...
  18. richard300

    M104 -Broken Valve??

    Hi - I have had a misfire on my Mercedes S280 (M104.944) that i have struggled to resolve. Changed the plugs, leads, bought a new coil and swapped them around.... But its still there. When i changed the plugs i found the front 3 were dirty and the rear 3 were wet. I also had someone think it...
  19. richard300

    M104 Bad earth? effecting cylinders 3 and 4...

    Had a missfire develop out of the nowhere on my 1996 S280. It seemed to move around (sometimes cylinders 1 and 6, sometimes 3 and 4 etc).... but now seems to be constant on cylinders 3 and 4. A friend had a look and traced to fault to the connection (poor earth/permanent live) to the plug...
  20. richard300

    M104 Misfire (1996 Mercedes S280)

    I always felt my car had a slight misfire (barely detectable, to the point that i thought i was imagining it) Today though, after a 15mile motorway journey i pulled to a stop, the revs dropped and the car has had a very notable missfire since. I changed the plugs 3 months ago, so (currently i...
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