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Vacuum Hose Diagram

Discussion in 'Land Rover Freelander' started by zoolander, Sep 23, 2012.

  1. zoolander

    zoolander New Member

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    Following on from my problem the other week when my injector pump died and was replaced by a garage who managed to lose most of my undertray screws/bolts.

    Since the injector pump was changed my car has a very loud whooshing/whistling noise when the turbo kicks in - wasn't like that before the garage did the work. I was going to buy the DPH set anyway so thought maybe this is a good time to do it. Fitted all the new hoses - old ones looked solid despite being very oily. All fitted correctly but noise is still there.

    I'm certain it's a vacuum hose split or come loose but unsure of the routing of the hoses. Does anyone have a diagram where they go?

    My car (TD4 2005) has done 101k miles, EGR bypass fitted for over a year, no loss of power, no smoke. Just much louder than it used to be.

    Cheers all

    Dave
     
  2. hd3

    hd3 Well-Known Member

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    that's almost got to be pressurised air escaping from the post turbo system ..
    hoses / intercooler / manifold ..

    or maybe from air being sucked in somewhere pre-turbo ..
    i.e. apart from the air-filter opening ..
    e.g. if the cover hadn't been re-fitted corectly ..
    or the maf sensor wasn't sealed in place properly

    would not that effect the brakes vacuum servo ??
    i.e. would not the brakes 'feel' different ?
    ( just speculating )
     
  3. zoolander

    zoolander New Member

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    yes brakes are not as sharp as before. Also since I did the EGR bypass Ive always had the buzzing duck noise (mentioned on this forum a few times) That noise has never bothered me, but since the garage had my car the buzzing duck noise has been greatly reduced to a very faint sound making me think vacuum pressure has been reduced.

    Have already checked air filter when I fitted new DPH set all fitted ok.

    Pouring with rain outside right now so cant really work on the the car - just trying to get some advice.

    Thanks all
     
  4. hd3

    hd3 Well-Known Member

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    might be Similar to this : 'Layout of vacuum hoses ( bmw ) M47'
    BMW TIS - 11 74 ... Layout of vacuum hoses (M47 / M57TU)

    in that the Vacuum tank looks the same
    ( i've no idea what the pressure converters are on that )
    there will be something connecting the vacuum pump to the v.tank ( i'm assuming )
    from the tank .. there will be branches out to
    egr unit / solenoid
    brake servo
    turbo vanes unit / solenoid
    ( i think that's all .. can't think of anything else right this moment .. might be wrong )
    ( googling didn't display any diagrams except that one .. on initial search)
    no doubt it might be a right job finding the leak ..

    ~~~~~~~~~~~~~~~~

    score 1 for the 'duck' .. as an indicator of vacuum system health .. or lack of :)

    best of luck tracing the fault ..
     
  5. zoolander

    zoolander New Member

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    Ive been looking around my engine bay today looking for air leaks and the only one Ive found so far is from a round hole on the right hand side of my air filter box - circled in yellow on the picture.

    Is this meant to have something pluged in to stop air blowing out?

    cheers all.
     

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  6. gloker

    gloker New Member

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    On mine, that hole has a hose clamp clipped in to hold the rubber hose just below your yellow circle ( block it with gaffer tape )