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Disco 2 TD5 Auto slight lack of drive immediately after start.

Discussion in 'Land Rover Discovery' started by Si Click, Sep 12, 2019.

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  1. Si Click

    Si Click Well-Known Member

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    This is quite likely absolutely nothing, but I have noticed that if I try and reverse immediately after start it needs more revs to get the truck to move than it would if I waited 20 seconds or so.

    I'm guessing that this is due to the time taken for fluid to be pumped around the box. The fluid was changed less than a year ago and I have seen no leaks, so when I checked the fluid level this afternoon I was not surprised that it was spot on and clear red.

    So my question is: is this a characteristic of the TD5 auto, or should I be concerned?
     
  2. Henry_b

    Henry_b Flame grilled ( ͡◉ ͜ʖ ͡◉)

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    Can you feel it going into gear?
     
  3. Stanleysteamer

    Stanleysteamer Well-Known Member

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    did you change or clean the filter at the same time?
     
  4. Si Click

    Si Click Well-Known Member

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    Yes, it is definitely in gear and a few seconds later pulls normally.
    Yup filter replaced.

    The only difference from stock is that it is fitted with a V8 torque converter with an Ashcroft adapter. Does fluid drain from the Tq converter when not running? If so guess it could be the additional time for the larger converter to fill.
     
  5. Stanleysteamer

    Stanleysteamer Well-Known Member

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    If the torque converter is bigger, which it probably is, I suppose it would take more fluid, so therefore its inbuilt pump would take longer to fill it. I expect you would notice this less in hot weather when the fluid is thinner, but then we are sort of in summer just! Even in Bucks! I think you are right in thinking that at least some fluid drains from the converter when it is not running. I read up on exactly the conversion you have and all the blurb said how careful you have to be when refitting the TC in order to "not damage the pump" so that is why i mentioned a pump. I'd ring Ashcrofts and see what they say.
     
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  6. Stanleysteamer

    Stanleysteamer Well-Known Member

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    P.s. i think the only adapter is the need to fit the 3 hole TD5 plate from the TD5 tc in place of the 4 hole plate from the V8 TC, or vice versa, cannot remember exactly. did think it might be possible to buy a V8 TC and do it myself, but didn't fancy all the heavy lifting!
     
  7. Si Click

    Si Click Well-Known Member

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    You are right and the adapter is basically a plate, a major part of the Ashcroft price is refurbishing the used V8 unit. Given what a PITA it is to fit I'm not sure I would trust one straight out of a scrappy. I chickened out of the heavy lifting and got a local LR indie specialist to handle it. Glad I did, it was the first one they had done and took them 3 days longer than they estimated. I gather they spent a lot of time on the phone to Ashcroft.
     
  8. Si Click

    Si Click Well-Known Member

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    The V8 converter is definitely bigger. download (8).jpg
     
  9. Bantam1

    Bantam1 Well-Known Member

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    Not had a look at the gearbox since I got the car (TD5) so don't know if I have stock TC or not but I have noticed the same.
    What I would say is that mine spends the week wrapped up safely in the garage so there is usually at least 5 days before I start and use her at the weekend.
    I find that after a period of inactivity mine too is slow to take up the drive. However, every other startup thereafter, even the next morning, and the drive is there straight away.
    I imagine there must therefore be a degree of drain down that needs to be refilled and noticeable only after longer periods of inactivity.
     
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  10. Discodevon

    Discodevon Well-Known Member

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    Could this be the maf sensor failing as I had similar on my old d2?
     
  11. Si Click

    Si Click Well-Known Member

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    You might have something there. I will do some experimenting and see if it only happens first start of the day and if it only happens after a few days inactivity.
     
  12. Si Click

    Si Click Well-Known Member

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    The MAF was replaced with genuine LR about 6 months ago and the engine itself does not seem to be an issue. I have a long steep hill nearby that allows me to use full throttle for all the way to the top without exceeding the speed limit (just about). Once in a while I give it a blat and see what speed I can achieve by the top. So far I have seen no drop off in performance since fitting a new MAF and curing a boost loss issue.
     
    Last edited: Sep 13, 2019
  13. iansoady

    iansoady Active Member

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    That's perfectly normal in my (70,000 mile) experience. As said, it takes a few seconds for the oil to circulate.
     
  14. Rushjob

    Rushjob Active Member

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    Yep, mine 260k km recent new filter and oil change does the same, if left for 3 or 4 days, first set off is delayed for a few seconds before drive is taken up then every start up afterwards it's fine.
    I've put it down to old age, a bit slow to start in the morning but then fine for the rest of the day, a bit like myself!
     
  15. Si Click

    Si Click Well-Known Member

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    Thanks everyone, I shall put it down to character and not worry about it.
     
  16. Discodevon

    Discodevon Well-Known Member

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    You do want to warm it up for a tad anyway, you’re engine will thank you for it
     
  17. Si Click

    Si Click Well-Known Member

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    Indeed.
     
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