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Thread: D2 td5 and lack of power on hills

  1. 2nd January 2012, 06:59 PM #1
    MarknDeb Guest

    D2 td5 and lack of power on hills

    Gday all and a happy new year, ok our D2 has started a discouraging trend when climbing hills, we have a hill comming out of town that is a very good climb, the car used to climb at 100 now we are lucky to get to 85 ???? even when entering the highway its sluggish from about 70 and up, at take off upto 70 the car is still the same as allways but past 70 its depressing.

    I have read a few threads so i have cleaned the MAF, no change so i tried unplugging it and still the same ????? she up for a service so if i get a few ideas it will help when i take her in.

    Thankyou for your unput

    Mark
    D2 Launceston Tas
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  2. 2nd January 2012, 07:19 PM #2
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    LandyAndy
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    Could well be the MAF,see if anybody local can let you use a known good one.If yours is stuffed,cleaning it wont help.You can check it output with a Nanocom,a search should reveal the values the Nanocom should be getting from the sensor.
    Its also worth cleaning the pressure sensor on the inlet manifold.
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  3. 2nd January 2012, 08:25 PM #3
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    Fluids
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    De-laminating turbo/intercooler hoses ...

    MAF, IAT, AAP sensors ...

    Blocked air filter ...

    Failing fuel pump ...

    Failing throttle position sensor ...

    Lack of turbo boost ...

    ... 'nuff now
    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

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  4. 2nd January 2012, 08:51 PM #4
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    Marmoset
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    CAT breakdown? I've just had a new one welded in and the motor feels a lot more revvy and willing to do something. Just one of many options....
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  5. 2nd January 2012, 08:56 PM #5
    MarknDeb Guest
    Thanks Andrew as for Kev hmmmmm not sure if i will thank you mate with that list , i will book her in for a service in a couple of weeks and Paul at Goldstar can check the maf electronicaly, it did cross my mind about the intercooler hoses
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  6. 2nd January 2012, 08:58 PM #6
    MarknDeb Guest
    Quote Originally Posted by Marmoset View Post
    CAT breakdown? I've just had a new one welded in and the motor feels a lot more revvy and willing to do something. Just one of many options....

    um i have not been around for a little while and may have missed some new mod for the Disco
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  7. 2nd January 2012, 09:21 PM #7
    MarknDeb Guest
    Sorry Marmoset i was having mental pictures with something to do with CAT plant EQ i found a thread with your mention about the new cat and yes now i do feal like an idiot

    Mark
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  8. 2nd January 2012, 10:17 PM #8
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    Fluids
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    Mark ... it's a process of elimination .... build a list, and mark off what it isn't one by one (some of these things you can do yourself)

    ... narrows the field down for what it might be.
    Kev..

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  9. 4th January 2012, 07:53 PM #9
    trev
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    lack of power on hills

    Check your turbo modulator valve,small black box under turbo hose has 3 hoses from memory,check for leaks from any,if not maybe replace entirely.Not an expensive part.
    If faulty, problems usually come in around 3000RPM when it thinks the motor is over-boosting,then cuts fueling back.

    Trev.
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  10. 4th January 2012, 08:21 PM #10
    MarknDeb Guest
    Quote Originally Posted by trev View Post
    Check your turbo modulator valve,small black box under turbo hose has 3 hoses from memory,check for leaks from any,if not maybe replace entirely.Not an expensive part.
    If faulty, problems usually come in around 3000RPM when it thinks the motor is over-boosting,then cuts fueling back.

    Trev.

    Thanks Trev, i replaced that one roughly a year ago and i think about it again but it feals different its not surging like it did last time ?????

    Mark
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