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Please Help - Giving Up Hope - CLK 55 W209 Not Charging

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by danielfoley, Apr 4, 2020.

  1. danielfoley

    danielfoley Member

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    Joined:
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    Your Mercedes:
    2004 CLK 320
    Hi All

    I am desperate for some help - I am losing the will to carry on. Brought an 03 CLK 55 W209 with 67k for £4000 a few months back.

    4 weeks ago I was driving and got the battery warning message in the cluster. Battery went flat and had to get car recovered.

    Got car home up on ramps. Replaced alternator with a LUCAS alternator from Euro Car Parts (£300). Hooked up and ran - still getting the warning message in cluster.

    Changed the battery out with a new 100ah YUASA battery.

    Still getting the warning on the cluster.

    Chucked a multimeter on - positive on back of alternator - when engine ISNT running I get 12v. When engine is running I am getting 10.7v.

    Also - to get the alternator out I had to change the radiator and A/C condenser as they were bent (car had unrecorded front end in the past). I've stretched the lower radiator rubber o-ring, can anyone point me in the direction of getting a new one).

    Also - I lost a load of transmission oil when the radiator was off (I ran the engine with pipes disconnected after id changed the alternator which was daft - anyone know what transmission oil I need to get?)

    Is it worth me running the engine with the alternator LIVE disconnected and measuring the output without the cars load on the alternator? I brought the alternator as NEW from euro's but what I got looked like a reconditioned one?
     
  2. Wighty

    Wighty Senior Member

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  3. sonic

    sonic Senior Member

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    Did you check the original alternator output before you changed it?
     
  4. star

    star Forum Supporter Authorised Forum Supporter

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    Could be the wrong alternator, check how many wires are in the small plug connector and alternator. Some are single wired and some twin wired.
     
  5. Bubble

    Bubble Senior Member

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    It wouldn't be the first time that I have been sent a faulty Lucas alternator from euro car parts.
     
  6. star

    star Forum Supporter Authorised Forum Supporter

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    Yep, happens more often than people think.
     
  7. AMGeed

    AMGeed Senior Member

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    ECP has its uses, but regularly gets it wrong when sending parts out that should fit according to their computer system.
    I've had to return batteries and brake pads in the past that weren't the correct part.
     
  8. Uncle Benz

    Uncle Benz Senior Member

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    Your Mercedes:
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    Lucas, Prince of Darkness.
     
  9. alexanderfoti

    alexanderfoti MBO Forum Supporter Authorised Forum Supporter

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    I agree. I dont use electrical parts from ECP, especially sensors etc as they never work right.
     
    Wighty, mioba and Blobcat like this.

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