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Range Rover P38 Sluggish / no power

Discussion in 'Range Rover' started by donkrr, Jun 12, 2010.

  1. donkrr

    donkrr New Member

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    I have a P38 Range Rover with the 2.5 BMW Diesel engine, i,v just taken it for its first road test ...and probablys the last if this is as good as it gets ! , the vehicle drives superbley apart from its sluggish on pick up ( has an auto box) and top speed is around 65mph, the vehicle has been maintained by a main dealer and a "specialist in land rovers", has any one got any idears what could be wrong or is this standard, thanks
     
  2. gtland

    gtland New Member

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    Definately NOT normal. Should be about 95`ems top knock. Not a dragster but does sound wrong.
     
  3. gtland

    gtland New Member

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    Could be something as simple (and cheap) as blocked/dirty fuel air filters, or something much worse (expensive). Any smoke? Whistling noises? Any other symptoms?
     
  4. donkrr

    donkrr New Member

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    No black smoke to speak of, if i use the kick down on auto box there is the slightest amount but nothing to worrie about, its had a service less than 1000 miles ago and the filter looks new.
     
  5. j the range

    j the range New Member

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    go back and take some body with you. if you unsure leave it, there are loads of p38s out there for sale..
     
  6. tmsumner

    tmsumner New Member

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    Just had a similar problem to this, and the good old boys on here helped me sort it. I changed the fuel filter, the wrong one had been fitted, I also re-connected the MAP sensor pipe to the fuel filter assembly, it transformed the car. Hope this helps.
     
  7. rewmer

    rewmer Well-Known Member

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    Walk away, there are so many out there it would be foolish to buy one that has a fault to start with. They certainly dont fly but top speed should be about 90 ish. Sounds like it may be in "get me home" mode.
     
  8. softop2011

    softop2011 New Member

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    had my p38 auto ( bmw powered) for 6 months fitted a chip from bearmach slight improvement but still slow off the mark and not much power but has a good top speed - really bad when cold - slow response after pressing throttle seems ages before it reacts - hope to get answers from somewhere .
     
  9. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Check the pipe from the MAP sensor bolted to the fuel filter, is connected under manifold, has no splits and is not blocked. Check that manifold outlet is not blocked and MAP sensor inlet is clear. sounds like you have no boost fuelling.
     
  10. Davlyn

    Davlyn New Member

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    Is it only like it when its cold or does it get better as the vehicle warms up?

    Dave
     
  11. softop2011

    softop2011 New Member

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    runs better when hot but is sluggish - really really bad when cold job to pull off the mark - ordered new filters air/fuel will change next day or so - re made the end on the manifold to ? (whatever the sensor) pipe is and checked the maf unit clean inside and was ok - air filter slightly dusted ( cleaned )- but it seems the turbo comes in late around 2500 rpm ??? :confused:
     
  12. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Turbo always comes in at 2500 rpm. Try cleaning the intercooler out.
     
  13. softop2011

    softop2011 New Member

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    sounds like a bit of a task - will have a look thanks
     
  14. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Can be done in a couple of hours, could make a considerable difference, if it's choked up with crap.
     
  15. softop2011

    softop2011 New Member

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    Hi again -just took the flexi cooler pipe off to look at the condition from the egr valve end - the valve area was all bunged up a bit but the intercooler pipe going to the valve, and the outlet of the cooler (with the pipe off that end) seemed quick clean a bit of dust on the rag that went into the cooler outlet but no where near as gunked as the egr valve - by the way - i think i may have a leaky seal on the inlet manifold No 6 cylinder - oil leaking from what looks like the manifold flange cleaned an old leak yesterday and now slight dribble today - could this be dragging air in and having an affect ????
     
  16. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    The manifold is under pressure from the turbo i hardly think it will be dragging air in. Take the EGR valve off and give it a good clean with some petrol and blow off. If EGR is sticking open that would give you problems. Should not be dust in intercooler there should be an oil film in it. Still worth cleaning out if it has never been done before. It is supposed to be done around every 48,000 miles.
     
  17. softop2011

    softop2011 New Member

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    sorry - meant that it was slightly dirty but not as gunged not dusty - mileage about 70k so may need a looking at - gonna get my spanners taaaaa
     
  18. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Get some Plusgas for the retaining bolts they do tend to be hard to get out sometimes. Put a little Copaslip on them when they go back.
     
  19. Datatek

    Datatek Well-Known Member

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    A duff in tank pump can make them sluggish. Always a bit tardy when cold, I hold my in 1st/2nd on the gear stick to climb out of my place:)
     
  20. wammers

    wammers Purveyor of tech stuff. REPAIR EVENTS ORGANISER. Donater

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    Yep Data another good point. No diesel gives good power when cold it's in their nature not to. Because the combustion process relies on heat. This problem could and most possibly is a lot of small problems adding up to a whole. A good service and clean out may work wonders.