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Vz engine control relay burnt

Discussion in 'VZ Holden Commodore (2004 - 2006)' started by Snickers89, Jul 15, 2015.

  1. Snickers89

    Snickers89 New Member

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    What can be the cause of a engine control relay being burnt?
     
  2. Benboy

    Benboy Well-Known Member

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    When you say burn - I presume you mean electrically destroyed NOT a fire !!!

    If NOT fire then perhaps an extreme voltage surge or short circuit.
     
  3. MYVESSV8

    MYVESSV8 Well-Known Member

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    if its the contacts that have slowly failed you end up with a poor connection and the condition gets worse from there, so extra heat higher contact resistance more heat etc
     
  4. Snickers89

    Snickers89 New Member

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    Wasn't exactly on fire but the outer shell of the relay did show signs of some type of overheating... Haven't opened it up yet tho
     
  5. Snickers89

    Snickers89 New Member

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    There wasn't any blown fuses or anything tho. That's got to be a positive right?
     
  6. routier1642

    routier1642 Member

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    I had exactly the same situation 2 months ago. The casing of the ECU relay looked scorched.
    Cause unknown!

    I swapped it with the high beam relay (identical, but used least often) until I could get a replacement.
     
  7. Vzproject

    Vzproject New Member

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    So did anyone figure out the cause for this or the solution or should I just replace and keep replacing? Tyia
     
  8. Amyk

    Amyk New Member

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    Been having problems with my VZ starting intermittently, bought a brand new key, and was checking some other things and just noticed my Engine control relay looks a bit burnt on top also. Would like to know more about this too...
     
  9. Fu Manchu

    Fu Manchu Well-Known Member

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    For those wondering...

     
  10. Amyk

    Amyk New Member

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    Bought a new Holden relay but still is getting really hot even after a short running time...looks like I'll have to get it looked at...
     
  11. Fu Manchu

    Fu Manchu Well-Known Member

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    Make sure you check your earth points for the ECM and engine harness. Body earth points under the bonnet as well. Make sure they are tight. One hidden a bit top rear drivers side above the exhaust manifold and below the cam/valve cover.
     

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