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Thread: 1.9 CDTI 120 Help please

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    Default 1.9 CDTI 120 Help please

    Hi i know there are a few posts similar to this but not with all the symptoms?!

    I have a 2004 vectra estate 1.9 cdti 8v I have a few issues that i would be gratefull for some help with!

    Very loud whistling noise from the turbo (not normal turbo noise its reall loud)
    Also it has a loud noise as if air is escaping under pressure
    Poor performance and every 5 min the spanner light comes on going in to limp mode (switch it off and on and its fine)

    It has the fault code P1901 Exhaust gas pressure sensor.

    I have not long had the car and it was not whistling until i found a split in the vacum pipe to the turbo and repaired it now it is much more responsive but has the whistling noise.

    My questions are: Could the previous owner have adjusted the boost to compensate for the split hose and now it is boosting too high?

    Could it be back pressure due to blocked cat etc or turbo ducked?

    Any help would be grate need the car for work!

    Thanks, Marc

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    Regular Member winnie2457's Avatar
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    If tre is a loud noise still could be a split intercooler pipe or even a cracked exhaust being an estate if there is not enough flow through the dpf and cat in the exhaust system this will give a error code too

    Check all engine boost pipes and intercooler for leaks and check all the exhaust system from turbo back to your dpf in the middle o the car

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    Regular Member DaveW555's Avatar
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    Would it necessarily have a dpf on a 04 plate? I thought that didn't come in til 05, I may be wrong but just a thought

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    Regular Member rec's Avatar
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    Quote Originally Posted by DaveW555 View Post
    Would it necessarily have a dpf on a 04 plate? I thought that didn't come in til 05, I may be wrong but just a thought
    no bud, my 04 plate energy estate has a DPF, ****** thing makes me look like uncle buck as soon as i get on the motorway

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    It def has a dpf i was under the car yesterday! i will try and check all pipes today. The noise sounds like the turbo spinning up but screaching loudly you dont think it could be running too muvh boost? Cheers

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    Hi all i checked all hoses and they are all ok but the intercooler is split so will get a new one there is no play in the turbo so im hoping that it is ok! Would the split in the intercooler cause the loud whistling noise? Anyone got a intercooler?? Thanks

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    Regular Member rec's Avatar
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    do you mean there is a split in the intercooler Pipe? or the intercooler itself?

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    The intercooler its all out of shape and leaking on both bottom corners but the whistle is coming from the turbo would the intercooler cause the turbo to over spin?

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    Ok i have replaced the intercooler cleaned all the hoses out cleaned the egr and inlet and cleaned out both cats but still whistling!! Took the turbo off today and one of the blades has its tip missing hence the whistle
    I now need a turbo are they different on the 8v and 16v? There are a few 16v ones on ebay but no 8vs Will they fit ok??
    Thanks for your help guys

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    Regular Member Marky's Avatar
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    Pretty sure they are different.

    This place has a brand new one, for the 8v (Z19DT), on offer at the moment for £400. http://www.vauxhallworldparts.com/pa...e=48&cont=true

    The part for the 16v (Z19DTH) is a different price £700. Which suggests they are different.

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