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Volvo Penta D3-110, Warning check EVC system.

Discussion in 'Technical Discussion' started by Phil Boniwell, Aug 21, 2016.

  1. Phil Boniwell

    Phil Boniwell New Member

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    Location:
    Weymouth
    Hi everyone,
    Wondering if anyone can help.
    Ocqueteau 645 steaming along at 2750 revs when tachometer beeps and reads 'warning check EVC system', Tachometer falls to zero but revs remain the same. I come down to tick over and switch the engine off, then start up again whereby the tachometer starts working again and the warning disappears. I bring her up to 2000 revs where she sits happily for an hour until I increase up to 2750 rpm then within 30 secs tachometer beeps and warns check EVC and falls to zero(revs remain the same)
    My EVC only monitors 5 conditions, Engine hours, Turbo pressure, Coolant temp, Voltage, and RPM.
    Local agent here in Weymouth put Vodia tool on and it read unidentifiable fault, they said check all EVC connections (which I have done,including the two engine fuses) but to no avail.
    I have run the engine out of gear for 15 mins at 3000rpm and no warning shows so my eyes are turning towards turbo pressure or coolant temperature.
    Any help would be greatly appreciated guys...thanks.....Phil
  2. Capt J

    Capt J Senior Member

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    Well, what does the coolant temperature read when you're in gear at 2750 rpms for a while? When was the last time you've changed your raw water impellor? How's your coolant level? How many hours/years does the heat exchanger have on it without being cleaned?
  3. Phil Boniwell

    Phil Boniwell New Member

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    Thanks for prompt response Capt J,
    The boat has just had a full service from Volvo,all filters oils impeller and coolant were replaced, the coolant reads 86 degrees C at 2750 rpm.
    The EVC alarm would tell me if the coolant were to hot,or indeed if there was a problem with the engine, but the engine runs beautifully'
    The problem I have is with the EVC system itself, it reads 'Warning check EVC system'
  4. Capt J

    Capt J Senior Member

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    I'm guessing you have a power or ground issue to the EVC and also why the tachometer goes blank. I would check power and ground connections on the harness. But, barring anything obvious there, it sounds like you're going to need to get a Volvo computer hooked up to it (dealer).
  5. rcrapps

    rcrapps Senior Member

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    Volvo just did the service and you get the error?
    Any EVC or ECM updates preformed? How deep was their service?
    Inter-cooler, starter or alternator repairs? Battery connects cleaned?

    Think you need to call the Volvo tech back out if the error happened RITE after their service.
    Were they real Volvo techs? They have the LapTop to talk to your machine?

    It could be so easy as the sender or wire to it was bumped (flywheel mag pick up?).
  6. Phil Boniwell

    Phil Boniwell New Member

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    Location:
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    Thanks guys for your help,
    I'm from a marine engineering background so I'm pretty clued up on marine diesels and how they work.
    My snag is the electronics of the EVC. The snag was there before the service, they connected their Vodia interrogation tool and it showed no faults on the engine, just an unidentifiable fault on the EVC system.
    The problem I think is electronic, yet related to the change in the engine state as it approaches full power, which is what leads me towards temperature and/or pressure. It is not a mechanical problem because the EVC would register a fault to that effect.
    So in short the engine runs perfectly, it's the EVC that cuts out as the engine gets close to full power, it's almost as if an EVC sensor is working loose through vibration or expansion via temperature rise.
    The most relevant information is--
    The engine runs flat out at 3000 rpm out of gear with no problem.
    The engine runs in gear at 2200 rpm with no problem until I increase to 2400 rpm when the warning beeps within a minute.
    Grrrrrr!
    I will check out your suggestions ref earthing points etc.......Many thanks again
  7. Fishtigua

    Fishtigua Senior Member

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    Depending on which model of D3/EVC you're running, there are a few things to check.

    In the air filter/inlet there's an air mass sensor that fails often, can really screw-up your day. Hard to trace just with Vodia. You can buy the Bosch one online for £20 rather than the £80 Volvo wants.

    The other one is on the turbo side. The variable vanes can stop working properly for no reason, hence the drop in revs.

    Just a couple of ideas to try.
  8. Phil Boniwell

    Phil Boniwell New Member

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    Cheers Fishtigua, that is great information, I checked out the turbo vanes and everything seems fine there.
    I'm sure the tachometer dropping to zero is an attention seeker programmed in to to do just that, the engine does not miss a beat when the warning goes off.
    I'm sure it is related to 'under load' conditions....thanks again for your help, I'll keep you all posted if I find the snag.
  9. Amund litlabo

    Amund litlabo New Member

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    Hi, I have the same problem with a D3-150, 2014 model! Volvo mekanics cant find the problems have tryed new evc brain, nothing helps!
  10. Amund litlabo

    Amund litlabo New Member

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    Any news about this problem?

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