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Thread: Low range, gear & TC

  1. #1
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    Low range, gear & TC

    Is there any thruth in that to optimise TC the D2 must be in 2nd low range with the throttle constant?
    Or else te ECU might get confused with the slowing down of the wheels as having more traction.

  2. #2
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    No.

    In fact to optimise TC operation sometimes it is better to apply more power! The system needs to sense wheelspin so that it can work.

  3. #3
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    theres some truth.....

    second gear low range is generally pretty good for sand and dune climbing and if you're doing that and relying on TC then you need to keep the pedal in one position.

    Mashed to the floor boards.

    just remember to lift off if you stop or you'll just dig in.
    Dave

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

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  4. #4
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    My D2 fares pretty bad in cross axles.
    I can hear the TC working but the two low wheels still spins and then - STUCK. The wheels are not even in the air but still on the ground with little traction. Could it be that the ABS pump is mot working as it should?
    How do I check this?

  5. #5
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    Went to "The Good Oil" and saw the thread about Wabco.
    Will start reading there.

  6. #6
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    Hi Rudolf
    Being an 00 model you MAY be in luck.
    Landrover in its WISDOM thought that the TC system was so good they deleted the Centre Diff Lock and relied upon the Traction Control to do the job.
    The early ones actually still have the CDL all there all that is needed is a DIY handle or a later 2003+ selector to engage the CDL.2001 they deleted the inards of the CDL 2003 they brought it back with a lever to operate it!!!
    You are experiencing the systems limitation.
    You can lock the CDL(if its present) with a 10mm spanner,engine needs to be running as it will disable ABS and TC on startup.
    To find the CDL acuator look ontop of the transfercase directly above the front tailshaft.If you have a 10mm bolt sticking out you have a CDL,if its a round smooth blank you are out of luck.
    Lots of info available on AULRO. Try a search using D2 CDL.
    I have my own CDL lever,it really improves the vehicles off-road ability!!!
    Goodluck
    Andrew
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  7. #7
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    Hi andrew
    Have already done that but it seems that something is still missing.
    It appears that the TC does not brake enough.
    Rear wheel braking also seems to be on the light side.
    The pads & disks lasted 200000Km.

  8. #8
    Zute Guest
    I think your right in the brakes not having enough pressure sometimes. Ive experianced this too. up hill from a standing start, two tyres on differant axles have very good traction and the engine torque drives through the brakes.
    The fix :Axle Diff lock.

  9. #9
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    I remember a South African review of the D2....they thought it sucked off road...then the dealer said no thats not right...dealer did a check of the ABS and found air in the modulator and it wasnt working properly so in turn the traction control was not working properly. Fixed same day and given back to the tester who then was gobsmacked by its off road ability - reckoned it climbed a mud bank out of a river with standard road tyres than his shorty Deefer with muddies.

    I have always had by brake fluid changes and the modulator exacuated by test book or similar and fresh fluid in and bled with test book etc...and cycled it once a month or so if not off road (eg steep downhill drive way in second low coasting activates the mod...never had any problems off road and in deep sand towing - made Fraser in its driest conditions look easy - eg Indian Head where everyone was getting stuck.

    Try getting the brake system blead and do as above with test book or aftermarket equiv.

    Cheers

  10. #10
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    Selecting 2nd reduces the potential for torque spin (compared to using 1st)... It's the same principle as pulling away in 2nd when on ice. So, the idea of selecting 2nd is more about reducing the potential for wheel-spin without having to resort to using the Traction Control.

    As for Traction Control itself, to get the most out of the system you have to balance the throttle. Too little throttle and it just won't have enough 'oomph' too much throttle and you run the risk of sitting there with all wheels spinning and the system thinking there's nothing wrong.

    So... When you need to use TC, build up the revs gradually and give the system time to respond. If after a few seconds you're not making progress, increase the revs a little bit more.

    M

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