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Thread: 2001 SII Discovery TD5 Auto

  1. #1
    lizard322 Guest

    2001 SII Discovery TD5 Auto

    Hi Folks,

    I'll start by saying please excuse me if I've posted in the wrong area. I've just bought my first 4WD so I am learning as I go. I'm new to this forum, new to Land Rovers, new to all things 4WD, in fact I'm new to pretty much all of this so I appreciate your patience. In fact I'm not even sure how I will re-locate this question and any answers!

    But here goes....

    I've bought this Series II TD5 auto (not deliberately, I just asked a mate in the car trade to find me a 4WD and this is it) with 90ks on the clock and full service history to take the wife and kids and van on a trip around West Oz, not full on off-roading, more having a vehicle to tow with some expanded daytrip options. The Land Rover is rated to tow 3.5T and is regarded as a very good to excellent tow vehicle. My windup van is 1.1T (about 1.4T full load) which is well within the LR capacity, on paper. Hence my expectations of a comfortable towing trip?

    However, I have found that my Series II while towing my van is unable to hold top gear (Drive) on flat roads, no wind, not using cruise control. To complete a recent short trip I needed to drive in 3rd gear (slowing to 85-90 kph to keep the revs down a bit).

    Have my dreams of cruising up through the top end at 100 kph in top gear just gone up in smoke? Have my expectations of performance of the TD5 been too high or am I underpowered for some reason?

    I realise this question maybe a bit open-ended considering there could be numerous variables included but I have to start somewhere. Any clarity on this situation is appreciated. Cheers.

  2. #2
    Join Date
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    How are you driving it and how was it driven prior also what mode do you have the auto in?

    the electrickery has a slight capability of picking up on your driving style and adapting to it and if your driving is sports mode then it will kick down earlier and rev harder.

    IF it was driven by a thrash monkey before you got it it needs to unlearn thrash monkey and learn sedate grey nomad. This process is greatly aided by unhooking all the batteries for a while but make sure you have all the codes for everything before you start.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  3. #3
    lizard322 Guest
    Dave,
    To answer your question on my driving style, I am a little fuel consumption conscious and drive more like a grey nomad with a sore foot than a sports driver. Thus sports mode selection on the transmission is not required for me.

    Interesting to hear that the Td5 can maintain some "memory" of the previous driver and his habits. Thanks and I will look into it further.

    The other thing I might ask, does anyone know of a place or a business (in Melb or Geelong) that is capable of conducting relevant tests/checks on applicable componentry that may be causing issues and any necessary adjustments to correct them?

  4. #4
    Join Date
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    just a thought...

    are you sure its not making it into 4th or is it making it into 4th but not achieving torque converter lockup.....

    from memory (and autos are not my specialty area) the auto behind a td5 needs to hit and hold 100 for it to lock up in 4th.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  5. #5
    Join Date
    Jan 1970
    Location
    Central West NSW
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    The auto in the TD5 doesn't adapt to the driver, but it does react to the temps and conditions that the auto is experiencing. The lockup in 4th wont happen until you get to 80km/h.

    It sounds like the trailer is producing a lot of drag, but something isn't quite right. I can get the torque converter to lockup with with a car and car trailer on the back at about 3 additional tons.

    I would start by checking the ATF levels ***as per the handbook!*** as one of the first signs is to drop 4th gears lockup.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  6. #6
    Join Date
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    Manly QLD
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    Hi - there is definitely something wrong if you can't hold 100 in the conditions described above (flat & no wind) - I have a 99 TD5 auto and it would (admittedly pushing hard) hold top gear on the flat with over 2.5t of boat (admittedly much better through the air than a van) on the towbar. I Now have one of Tombie/BAS stage2 map upgrade and it now holds easily.

    I’m not a mechanical expert but I would be looking at simple things first like fuel system (injectors clean?), boost pressure at the manifold, A cr*appy fuel map – is there any smoke?? (if you’ve got a programmable engine ECU), the dreaded “oil in harness”, MAF sensor (within expected parameters), EGR valve (just get rid of it) and I’m sure guys like Tombie and Blknight can list some more. You will however need someone with a diognostic kit to get a lot of these readings.

    It’s my experience that your dreams as mentioned above here should still be ok once all is good. If you’ve got a NNN*** ECU get an upgrade once all is good, I’ve got a relative (currently at Eyre Bird Ob) who has travelled around the country twice and across it many times towing a “Aussie Swag” that weighs around the 1.2 to 1.4 range with a ’03 TD5 auto and it’s still standard and he doesn’t know anything under 100...
    L322 3.6TDv8 Lux

  7. #7
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    Quote Originally Posted by Blknight.aus View Post
    just a thought...

    are you sure its not making it into 4th or is it making it into 4th but not achieving torque converter lockup.....

    from memory (and autos are not my specialty area) the auto behind a td5 needs to hit and hold 100 for it to lock up in 4th.
    Slunnie's right its 80k for lock up - but this is an excellent point, lockup or the absence of it will give the feeling of dropping back - I've seen this in TD5 owned by a co-worker.
    L322 3.6TDv8 Lux

  8. #8
    Tombie Guest
    Quote Originally Posted by Slunnie View Post
    The auto in the TD5 doesn't adapt to the driver, but it does react to the temps and conditions that the auto is experiencing. The lockup in 4th wont happen until you get to 80km/h.

    It sounds like the trailer is producing a lot of drag, but something isn't quite right. I can get the torque converter to lockup with with a car and car trailer on the back at about 3 additional tons.

    I would start by checking the ATF levels ***as per the handbook!*** as one of the first signs is to drop 4th gears lockup.
    Guess again my friend

    D2 Auto does have adaptive shifting in its brain!!!

    And you can reset it baseline with a Rovacom.

  9. #9
    Join Date
    Jan 1970
    Location
    Central West NSW
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    Quote Originally Posted by Tombie2 View Post
    Guess again my friend

    D2 Auto does have adaptive shifting in its brain!!!

    And you can reset it baseline with a Rovacom.
    Is it active though.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  10. #10
    Tombie Guest
    Quote Originally Posted by Slunnie View Post
    Is it active though.
    Yes.... Makes a noticeable difference when reset

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