Alternator output new Iveco Daily

Discussion in 'Tech/Mech General' started by ceejayt, Jan 28, 2016.

  1. ceejayt

    ceejayt Funster Life Member

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    When driving it would appear that the engine is putting little or nothing back into the batteries by way of charge. Sometimes it goes up a little and often it actually goes down. I am being told that the alternator may not be producing sufficient power to drive the charger i.e. 14.2v for the type of batteries.

    I am completely clueless on this area all I know is that even after driving for several hours and expecting the charge to have increased significantly it has not.

    Any thoughts? The chassis is a new Iveco Daily 3 litre diesel.

    Thanks
     
  2. pappajohn

    pappajohn Funster Life Member

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    The alternator charges the leisure battery in the same way as it charges the engine battery......there is no charger involved.
    With the engine running it energises the split charge relay which allows charge current to the hab battery, albeit very slowly.

    Your problem sounds like a faulty split charge relay.
    If it was the alternator the engine battery would also discharge.

    The alternator output should be around 14.7v so well above minimum charge voltage.
     
    Last edited: Jan 28, 2016
  3. ceejayt

    ceejayt Funster Life Member

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    Thanks

    I think the problem is the alternator is just not spitting out enough power as they are big battery banks and fridge on electric etc.

    Bit of internet research suggests sterling b to b charger.
     
  4. pappajohn

    pappajohn Funster Life Member

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    If it has a b to b charger, that fools the alternator into thinling the battery is flat so forces full output from your alternator....even if the engine battery is fully charged.
    I would expect around 150 to 180 amps from the alternator....more than enough for a large bank and fridge.
    Mine had enough to keep charged 550ah of battery bank....thats 5 x 110ah batteries.
     
  5. ceejayt

    ceejayt Funster Life Member

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    Thanks
     
  6. jonandshell

    jonandshell Funster

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  7. jonegood

    jonegood Funster

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  8. funflair

    funflair Funster Life Member

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    For "smart" read stupid and useless for motorhomes.

    Martin
     
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  9. sallylillian

    sallylillian Funster Life Member

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    If you have a 2015 Daily Chassis, read the thread referred to above, your MH manufacturer should pay for the Iveco software disabling of the smart charging, N+B are for my Flair. Another Flair owner has just had his neutered and it solved the issue.
     
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  10. ceejayt

    ceejayt Funster Life Member

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    Thanks for this. Brilliant to get this sorted.
     
  11. jonegood

    jonegood Funster

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    I read the original thread with incredulity, but now having had time to think it through - Most of this sort of stuff is undertaken by manufacturers to get them into the newer 'euro' class in this case 6. If the smart alternator has been a factor in allowing them to achieve euro 6 with this engine and it is subsequently disabled, is the vehicle no longer euro 6 compliant?

    If so we could have another volkswagen here.

    As an aside I do know that the heavy truck manufactures had a few issues with engine cooling to get there, hence all the redesigned fronts.

    Jon
     
  12. sallylillian

    sallylillian Funster Life Member

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    Jon,
    Interestingly once the chassis is converted the original emissions quoted on the CoC from Iveco are ignored, and the MH manufacturer does not get them regraded.
    Michael
     
  13. eddievanbitz

    eddievanbitz Trader - Funster

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    Everything goes out of the window! Crumple zones, pedestrian protection, security devices, crash testing, side impact bars, air bags and portection

    We are all driving death traps lol
     
  14. Techno

    Techno Funster Life Member

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