X250 3 litre throttle body rain cover

Discussion in 'Tech/Mech General' started by Techno, Sep 28, 2014.

  1. Techno

    Techno Funster Life Member

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    The X250 plastic engine cover is on the 3 litre at least inadequate.
    If the scuttle hasn't been sealed then any water running onto the cover runs straight off the front directly onto the throttle body electrical connector.
    This on mine results in the engine management light coming on frequently with a throttle actuator fault code.
    So I've knocked this up as a trial cure.
    A dissected 1 litre polythene measuring jug
    [​IMG]
    A 5.5mm hole to accept a pushpin rivet
    [​IMG]
    Fitted
    [​IMG]
    Engine cover replaced
    [​IMG]
    Viewed other way
    [​IMG]
     
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  2. icantremember

    icantremember Funster

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    That's an interesting mod, I shall look at mine in the morning.
     
  3. Mousy

    Mousy Funster Life Member

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    Good work Andy, can't wait to see what you'll do with the rest of the jug.:whistle:
     
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  4. DuxDeluxe

    DuxDeluxe Funster Life Member

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    Nice one, Dawn...... It was a very neat fix, though. No half measures, there ;)
     
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  5. jonandshell

    jonandshell Funster

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    The last time I saw a throttle on a diesel engine it was an air-governed 1950s Ford tractor!
    Wouldn't mass airflow meter be a more accurate description?:Smile:
     
  6. Techno

    Techno Funster Life Member

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  7. scotjimland

    scotjimland Funster Life Member

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    reminds me of the 'fix' that BMC employed on the early Mini's .. to keep the dizzy dry..

    keep up the good work Andy .. am keeping a close eye on all the workarounds as I may have a new Fiat soon .

    Fiat .. "Fabbrica Italiana Automobili Torino"

    no .. it means Fix It Andy Tomorrow.. :rolleyes:
     
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  8. Techno

    Techno Funster Life Member

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    Isn't it remarkable that they have practically admitted there is a water ingress problem by producing a revised body presumably with the electrical connection in a less vulnerable place :LOL:
    Why not just modify the naff engine cover they drummed up (n)
     
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  9. jonandshell

    jonandshell Funster

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    I agree they call it a throttle body, but a throttle it ain't!
    A throttle meters airflow creating a depression as in the application on a spark ignition engine.
    A diesel engine needs a 100% fill of air to achieve combustion by compression. There is no depression or 'throttling'!
    In the diesel application, the airflow control butterfly (throttle in Engtalian) prevents overly high cylinder pressures and therefore lower idle stroke resistance. This increases economy and power.

    God I hate it when manufacturers use bad technical language!
     
  10. Techno

    Techno Funster Life Member

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    The motor driven throttle body performs two functions:
    -shut off management
    -it controls exhaust gas temperature by restricting the cross sectional area of the intake duct.

    Sounds ok to me. In this instance I'll stay on the same song sheet as the manufacturer.

    The normally open throttle valve assembly fitted on the intake manifold controls the flow rate of intercooler air (throttles) to mix with the exhaust gases recirculated by the EGR valve
     
    Last edited: Sep 29, 2014
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  11. Techno

    Techno Funster Life Member

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    This is probably refering to limp mode?

    "If the throttle valve jams, the control unit will reduce engine performance to prevent engine damage."

    I have not experienced this myself, so far performance has remained despite the throttle actuator fault code being logged. It usually clears en route after a good drive.
     
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  12. jonandshell

    jonandshell Funster

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    Only my opinion, but being in an industry which involves imported machinery, I see a shockingly low standard of technical english in all technical publications.
    The death of our manufacturing industries is causing a pollution of our technical language.
    We seem to be naming components based on what they look like rather than by their function.
    Having a technical language lead by non technically qualified parts people is wrong and causes confusion.

    In this case it still ain't a throttle, its an induction airflow regulation valve!
    You could call it anything you like, but if it doesn't throttle, it aint a throttle!!!!
     
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  13. Techno

    Techno Funster Life Member

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    I just found this on the FIAT forum dated April AMAZING

    [​IMG]
     
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  14. jonandshell

    jonandshell Funster

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    I would say the necessity for the mod is truly vindicated!
     
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  15. JohnM

    JohnM Read Only Funster

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    Hi,very interesting i had mine replaced in May before going to europe, part supplied by fiat a recon part costing £285, +fitting, 8weeks later in Germany said part fails again on a friday afternoon managed to limp 1hour to Trier to get told that the part fitted was an old type.the good news was they had a modified part in stock and could fit that afternoon and would be ready around 5pm.Try getting that service at home.the bad news was 600euro.The best i could get from fiat was a refund on the faulty part on our retun home would not refund on fitting.
    JohnM
     
  16. Techno

    Techno Funster Life Member

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  17. Techno

    Techno Funster Life Member

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  18. sdc77

    sdc77 Funster

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    Had the throttle body replaced not too long ago. Still worth doing this little mod though.. thanks
     
  19. tonyidle

    tonyidle Funster

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    Last one I saw was on a 3 cyl Perkins in a Fergie tractor. It used the throttle depression to control the injector pump.
     
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  20. icantremember

    icantremember Funster

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    I've got one here removed by local Peugeot that looks exactly the same as the picture ..... the b@$!@rds charged me over £640 to replace and I still have ongoing problems.
     
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