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Thread: 8 SPEED AUTO WON'T CHANGE UP

  1. #21
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    Quote Originally Posted by DiscoDB View Post
    Graeme - be very wary of doing a full base adaptions reset. It should only be done under certain conditions, and if not done properly will make the the gearbox shift much worse than it was.

    The driver adaptions (pedal) reset is the only one I would do unless the ZF maintenance procedure calls for a base adaptions reset after doing specific work.
    I did a clutch-pack re-calibration of the 6-speed in my D4 trying to overcome a fault but which required a rebuild due to stator bush failure. I often reset adaptions with a diagnostic tool to get rid of the sluggish gear changes as most of the time I used the engine's torque which eventually resulted in the sluggish take-offs.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  2. #22
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    LRD414 is offline Super Moderator Subscriber
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    Quote Originally Posted by Tombie View Post
    Here’s the point - doing it occasionally yet regularly blows the crap out!

    And when towing, rpm will help keep it cooler not labouring.
    And regular use of the secondary turbo requires regular use of its shutoff valves which are known to get stuck ..... it’s a case of use it or lose it. We make an effort to get the engine over 3000 at least once every drive, especially if it’s doing lots of short drives. I don’t think this is relevant for your trans issue but worth noting anyway.

    Cheers,
    Scott
    D4 TDV6 MY14 with Llams, Tuffant Wheels, Traxide DBS, APT sliders & protection plates, Prospeed Winch Mount w/ Carbon 12K, Mitch Hitch & Drifta Drawers
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    Ex '77 RRC 2 door. Long gone but not forgotten.

  3. #23
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    The shut-off valve sticking was a design issue, overcome with a re-design of the linkages for both the 3.0 and the 4.4. However the occasional clearing of any oil residue in the secondary turbo inlet tract is worthwhile.
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi, RTK base station using LoRa

  4. #24
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    Quote Originally Posted by Graeme View Post
    The shut-off valve sticking was a design issue, overcome with a re-design of the linkages for both the 3.0 and the 4.4. However the occasional clearing of any oil residue in the secondary turbo inlet tract is worthwhile.
    Many thankyou's to everyone who has offered their opinion and thoughts re this problem. It is very much appreciated and if it happens again I'll try to note a few things and report back.

    It is an interesting 'problem' however I am not too fussed about it, only more so if it happens on the very odd occasion my wife drives it. If it happens with her the engine will most certainly get the soot cleaned out.....

    I have taken on board your interesting & knowledgeable comments re mothering the engine too much and in the interest of making the 2nd turbo work and reducing soot etc I promise to give it a bit more stick.
    When you think about it, 3000 rpm is not a lot!

    I replaced the brake light switch 26,000 klms ago early last year as a precautionary measure.

    Invoices provided with the car show the battery was replaced in October 2017 which was roughly 78,000 klms ago, but I will get it checked. Thankyou for mentioning that.

    Looking at the odometer yesterday I see its done 149,000; that last 3,000 crept up fast over past coupla months!

    I am thinking the alternator may be getting close to needing replacement?
    If we get away to the mainland this winter I'll replace it before leaving Tassy if you think it would be a good idea as it will have around 155,000 by June.

    PS: Last week I once again (have driven it a few times) drove a friend's 24 month old LC200.
    They are not a patch on a Disco. Just a glorified luxurious light truck in comparison!
    Before: Ser 2a LWB, Ser 3 S/W, 1979 RR 2 door, 1981 LR Stage 1 V8 (new), 1985 LR 110 V8 County (new), 2009 RRS TDV8
    Now: MY13 D4 TDV6. "E" rear diff. Cambo's magic Engine & Auto Tune. 1968 Austin 1800 Mk1 auto (my 5th)

  5. #25
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    Good process 8 SPEED AUTO WON'T CHANGE UP

    Mine regularly sees the red end of the tacho.
    The car won’t let you kill it, even in manual it will force a shift.

  6. #26
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    Quote Originally Posted by Tombie View Post
    Good process 8 SPEED AUTO WON'T CHANGE UP
    The car won’t let you kill it, even in manual it will force a shift.
    No, but some tend to commit suicide by letting their crank go....

    Do agree with letting it rev though, they still hustle along quite nicely

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