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P38 auto gear box fault

Discussion in 'Range Rover' started by donkrr, Jun 15, 2010.

  1. donkrr

    donkrr New Member

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    The poor performance fault on my Range Rover i thort was engine / fuel related is now a suspect auto gearbox problem, it does not change up into top gear, is there any common reason for this....or should i just break it for parts
    ( P38 2.5 dse auto 1996 )
     
  2. ex darksider

    ex darksider New Member

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    whats been your prob,mine popped a gearbox fault up today,but you have me worried as i been feeling like my truck is sluggish around 45-50 and i have to give it plenty of boot once its in top gear to get it to pull.
     
  3. donkrr

    donkrr New Member

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    There is no fault lights on, when i drive it slow, around car parks etc its fine, but on the road its slow to change up and wont go into top gear ( possibly the last two gears !) it just does not seem right.
     
  4. j the range

    j the range New Member

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    it could be your gearbox ecu..
     
  5. donkrr

    donkrr New Member

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    Is the gearbox ecu coded to the vehicle, or is it somthing i can get second hand and just plug in..( any idear where its located )
     
  6. gegs88

    gegs88 New Member

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    before you scrap it or spend hundreds on an ecu, have you tried an autobox fluid and filter change? can work wonders when the box is playing up and is alot cheaper than just replacing parts in the hope that it cures it:rolleyes:
     
  7. RAV

    RAV New Member

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    Definately worth a go - filter kits can be found on ebay for about £20, then get yourself some fluid and crack on - amazing the difference it makes.
     
  8. gemsdad

    gemsdad NOT BOTHERED. Donater

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    do a gearbox fluid and filter change,i used lucas atf and this made one hell of a difference to how my auto box changed up and down the gears,also it is now as smooth as silk when changing up and down.i got my atf of ebay,if you want the details just get in touch.;);)
     
  9. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Sounds like a sticky govenor. Can be helped by changing fluid and filter. But not always. You could try changing filter and fluid, running car for a couple of weeks, then changing fluid again. Keep changing fluid until it is absolutly clean. As there is always 4 litres or so fluid left in you cannot drain.
     
  10. Datatek

    Datatek Well-Known Member

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    Maybe you should get the fault codes read, maybe it's in "Limp Home" mode.
     
  11. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    If it was surely there should be a gearbox fault light showing?
     
  12. donkrr

    donkrr New Member

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    Re changing gear box filter and oil, i checked the oil on the dipstick and it looks very clean.
     
  13. gemsdad

    gemsdad NOT BOTHERED. Donater

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    thats as maybe,but when or if was the filter changed????.
     
  14. donkrr

    donkrr New Member

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    I will change the filter and oil, its got to be worth a go
     
  15. gemsdad

    gemsdad NOT BOTHERED. Donater

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    yes as it wont cost a lot to do it either.;)
     
  16. vougese39

    vougese39 Well-Known Member

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    i have come across a motor and the leds under the gear position were not lighting up and it was stuck in third gear carried out a ecu test found no comms but tested all the wiring and it was a fault in the becm not allowing comms though did find the gear position switch fault as the engine and display take signals before the becm and gearboc ecu fitted new switch £290 set it faults with lights cleared and all was well.

    early warning of switch faults are non dip of mirrors in reverse and sluggish changes
    get ecu read
     
  17. Datatek

    Datatek Well-Known Member

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    I'm not sure about that, do you know that is the case for sure?
     
  18. MajSkollie

    MajSkollie New Member

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    I had similar problem with gearbox and changing of gears, at the end it was the Kick back cable that stretched. Fixed it and seems to be fine now...
     
  19. tonymccandless

    tonymccandless New Member

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    Maj

    Where did you get the cable ? I have really stiff gear change and suspect this may be a contributing factor.
     
  20. vougese39

    vougese39 Well-Known Member

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    p38a don't have a kick down cable as it is ecu controlled