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R129 300 24 engine wiring loom

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Jimmy2pasties, Feb 15, 2017.

  1. Jimmy2pasties

    Jimmy2pasties New Member

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    Your Mercedes:
    2001 e320 CDI estate
    Hi, I am new to this club but have been an MB owner of various models for nearly 20 years and have recently acquired the above 1992 SL. I bought this at auction without understanding some of the pitfalls and yes the head gasket had gone along with the OVP relay, the Idle air control valve, viscous fan and various other bits.
    To cut a long story short I managed to get it running sweetly last summer and it recently let me down with the symptoms of a failed IAC valve, ie will not run at tickover. The following day it ran fine.
    I have read about the state of the wiring looms of cars this age and this is my question does anyone repair these?
     
  2. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500, 04 Smart Roadster Coupe

    Try Sileck - they rebuild your loom. Takes a couple of weeks and its best if you pre-book it in for them to do.
    http://www.sileck.co.uk/
     
  3. robparker

    robparker Senior Member Authorised Forum Supporter

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    Your Mercedes:
    300SL, C43, 6.9, + C220CDI estate for the dog.
    Although if yours is a 300-24 you should have ke jet injection so I don't think you will have wiring loome issues..
     
  4. chardF

    chardF Senior Member

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    Your Mercedes:
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    You don't have the infamous disintegrating loom. Still worth having a look, old stuff can deteriorate.

    If you do find problems I doubt it'd be the whole loom though, so look @ a local repair.
     
  5. OP
    Jimmy2pasties

    Jimmy2pasties New Member

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    Thanks for the updates, which models are affected by the loom issue?

    I will explore the local repair option.
     
  6. LostKiwi

    LostKiwi Senior Member

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    I seem to recall it was MY 1993 onwards models (certainly true of the V8s).
    If yours is a late 92 it may be affected?

    Easiest way to check is to look at any exposed part of the loom and check for exposed wiring or crumbling insulation. The usual places for it to fail are in hot zones (around the head so check the temperature sensor wiring - its where the issue is obvious on my V8).
     
    Last edited: Feb 16, 2017
  7. robparker

    robparker Senior Member Authorised Forum Supporter

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    Your Mercedes:
    300SL, C43, 6.9, + C220CDI estate for the dog.
    It's models with the new injection system, which yours isnt, so the 280 and 320 models (and yes the v8s and v12s too).
    Yours is essentially a 24v m103
     
  8. chardF

    chardF Senior Member

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    Your Mercedes:
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    As Rob says biodegradable harnesses for the 6 cylinder models came in on the HFM 2.8/3.2 engines.
     
  9. OP
    Jimmy2pasties

    Jimmy2pasties New Member

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    Thanks very much all you have saved me the expense of a full engine harness:D
     

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