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Thread: Something funny going on?

  1. #11
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    Quote Originally Posted by Tombie View Post
    Easiest way to test that is bypass the modulator unit, run the hose from the turbo outlet pipe (small hose coming up from the side) directly to the turbo waste gate actuator and go for a drive.
    This.

    And I've read and experienced what will more than likely happen, is it will then go with too much boost, and cause a fault(or go into limp mode). Turn off car it resets if it goes into limp mode.

    Very easy to do, maybe have some needlenose pliers to undo the clips on the hoses. Don't worry about any flopping about hoses for a bit, just a test drive to confirm WGM is at fault.
    If it is, easy to change yourself too.
    Arthur.

    '99 D1 300Tdi Auto
    '03 D2 Td5 Auto

  2. #12
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    Quote Originally Posted by jonesfam View Post
    2004 D2a TD5.
    She has been running really well unless I accelerate hard?
    So basically cruise on up to 110kph or about 2600rpm & all good, try to accelerate above 3000rpm & the car reves, drops reves reves, drops reves.
    Try to build up speed quickly & the same thing. Also does it on hills, not that we have many.
    Seems to rev to 3200 or so then drops back under 3000rpm.
    It's like it's surging, revs up & down very quickly.
    Not fun when overtaking!
    What should I be looking at? I am thinking it's either a fuel or air problem?
    Any help would be great.
    Jonesfam
    It sounds like the copper sealing washers under the injectors are failing and need replacing, I had very similar issues when the engine was under load up hills or accelorating. After replacing these washers and O rings under the injectors the fault disappeared.

  3. #13
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    re: Variable performance

    Quote Originally Posted by pjh4159 View Post
    It sounds like the copper sealing washers under the injectors are failing and need replacing, I had very similar issues when the engine was under load up hills or accelorating. After replacing these washers and O rings under the injectors the fault disappeared.
    Had something similar on a TDi300 where it would run and pull quite well until I wanted it to go a bit fatser or it had to work a bit harder, then it would just lose power.
    In that instance I found that although I had been chnaging all fuel filters regularly, there had been a bit of deritis caught on the small elbow on the inward fuel line to the rear filter, and when I needed increased fuel flow I wasn't getting it.
    Undid the line end into the filter and cleaned it out with a thin piece of plastic (zip tie), cleared out some bits of rubbish that somehow had caught up on the elbow leading into the filter and the problem stopped.

  4. #14
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    Today I have time to look at my turbo waste gate.
    I have lubricated & moved the little lever 1000 times.
    1. The lever does not feel like it's connected to anything, should it?
    2. When I let the little lever go it flops to the a middle down position, I thought it was supposed to spring to the cabin side, wrong or correct?
    Jonesfam

  5. #15
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    If you are talking about the wastegate lever itself IE the tiny 13MM long shaft that goes into the exhaust side of the turbo, then it should not feel resistant, as that is the role of the wastegate actuator .

    It is just connected to a flap inside which is opened and closed by the shaft from the pressure diaphragm in the actuator.

    If you are talking the actuator, you need a new one.
    Regards PhilipA

  6. #16
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    Thanks Philip,
    Yes it's the lever on the turbo.
    I can't budge the actuator shaft.
    The lever did not feel really very stuck when I first touched it, it was not loose but not real difficult to get moving, just a bit of a wiggle & moved.
    Since lubing it it is now really fee.
    Jonesfam

  7. #17
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    Well, it ain't the Waste Gate, unless it's the actuator?
    Just went for a spin & wont go over 2500 - 2600 RMP.
    I have now pulled the MAF thing out & hit it with a dose of cleaner.
    Once that dries I will re-install & try again.
    If that doesn't change thing I will try with the MAF unplugged.
    There is a thin film of oil or similar on the air inlet pipe.
    Jonesfam

  8. #18
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    The old girl is simply chucking a wobbly because she knows that you are going to sell her
    You only get one shot at life, Aim well

    2004 D2 "S" V8 auto, with a few Mods gone
    2007 79 Series Landcruiser V8 Ute, With a few Mods.
    4.6m Quintrex boat
    20' Jayco Expanda caravan gone

  9. #19
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    I don't think it's the MAF, no change after clean & no change with it disconnected.
    So I'm thinking maybe the waste gate activator thing.
    I will look about for a new one.
    Jonesfam

  10. #20
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    I may be thick and I missed it but have you checked the three small diameter tubes connected to the waste gate solenoid for cracks and / or splits?
    Cheers,
    Mark F...
    Vk3KW

    2002 D2 Td5 auto - current AKA The Citrus Money Pit
    2000 Disco 2 Td5 Manual - dead and gone
    197? Range Rover - gone
    1973 SWB SIII Diesel, 1968 SWB IIA Petrol, 195? SI Petrol - all gone
    Outback Campers Sturt
    http://jandmf.com

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