Ducato reversing judder

Discussion in 'Tech/Mech General' started by olewilliam, Oct 20, 2014.

  1. olewilliam

    olewilliam

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    I've trawled the site to find plenty on the reversing judder in Fiat Ducato's. However, most seem to say that it does not occur on the 3lt engine. Well it does on our's. We bought a 2010 Autotrail Tracker with a comformatic gear box. Very pleased with it too. Have done around 3500 miles. OK so far but... we avoid reversing on any slopes or wet grass if we can avoid it. The judder is frightening.

    Have spoken to the local Fiat people and .... well if I can understand the conversation correctly I should practise better clutch control or learn to drive. OK for the latter but the hell I can find the clutch peddle:)

    My question is what causes this judder, and I hope I'm stating the obvious in thinking this is very bad for the whole unit. And as I'm due to have a yearly service can I tell the garage anything that might solve the problem? One local garage has already informed me they will not service auto gear boxes because they have so much trouble with them.

    Doesn't sound good. Any thoughts?
     
  2. pappajohn

    pappajohn Funster Life Member

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    One local garage has already informed me they will not service auto gear boxes because they have so much trouble with them.


    I wouldnt want them anywhere near it......they obviously dont know what a comfortmatic box is.

    It is a standard manual box with robotised clutch and gearchange mechanisms.

    The reverse judder on the 2.3 engines was allegedly an overgeared reverse ratio which was too high to be useful at low revs so the box started 'bouncing'
    Fiats initial response was to rev the engine higher before letting out the clutch.....difficult with a robotised clutch.

    From memory it involved engine and g/box mount replacement and possibly a new set of lower ratio reverse gears
     
  3. Techno

    Techno Funster Life Member

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    Mine is a 2008 3 litre comfortmatic with 42k miles and never juddered
     
  4. joncris

    joncris

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    Just a thought but could the engine gearbox mountings be perished
     
  5. Techno

    Techno Funster Life Member

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    IMHO that would be extremely unlikely given the age and such little mileage.

    EDIT I see the OP does not say the mileage? only the mileage they have done
     
  6. Minxy Girl

    Minxy Girl Funster Life Member

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    Have you actually checked the production year of your Fiat base? It could be one from one of the years when there 'were' problems with 'juddergate' being a 'swear word' to Fiat! Our van is a June 2012 registered Fiat but was actually built in 2011, this is not unusual, so you may find your base is older too, it has been known for some to be anywhere up to 3 years older than the registration date!!!! If yours is one of the older ones there may be a 'fix' which has not been done so worth finding out if you can.

    As for how to manage it, have you tried putting on more revs? Although we have a standard manual gearbox which shouldn't be afflicted by judder, if hubby is a bit toooooo slow in his reversing it doesn't like it, putting just a little bit more power through does make a difference and any 'judder' disappears.
     
  7. sean n maggie

    sean n maggie Funster

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    ours is the 3ltr Auto on 08 plate, up to now never had a problem it will reverse lovely almost just on tick over revs.....
     
  8. jonandshell

    jonandshell Funster

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    Sell it quick!
     
  9. Gauntlet

    Gauntlet

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    Same here 3lt model 08 plate no problems fantastic engine
     
  10. knokinonabit

    knokinonabit Funster

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    2011 model, 3ltr with built in judder.
    When I tried to get it sorted Fiats official answer was "more revs"
    Funnily enough, I use tick over and clutch control and it only judders if I reverse to quickly.
     
  11. GWAYGWAY

    GWAYGWAY Funster

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    Transit!
     
  12. landscaper

    landscaper Funster

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    Ours 2007 Fiat 3 litre - never had a judder problem!
     
  13. Ralph-n-Bev

    Ralph-n-Bev Funster

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    Ours is a 2006 , neither have we.
     
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