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Thread: loss of power 150 cdti

  1. #1
    Regular Member SRI-150's Avatar
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    Default loss of power 150 cdti

    the cars going in to the dealers in the morning to see why i have no power, its like it'll pull for 1 second an then jus run without the turbo as in very slow, reved to about 4k in 3rd on the way to work an got spanner light on all the time not just at start up like it has been but after a restart that went, anyone got any ideas what it is???

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    Ex Vec-C Admin & Founder GARY3306's Avatar
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    Quote Originally Posted by SRI-150 View Post
    the cars going in to the dealers in the morning to see why i have no power, its like it'll pull for 1 second an then jus run without the turbo as in very slow, reved to about 4k in 3rd on the way to work an got spanner light on all the time not just at start up like it has been but after a restart that went, anyone got any ideas what it is???
    That could be absolutely anything. There is no way of saying it's definately this or it's definately that from descriptions of faults. The only way to see what's going on is tech 2 (or other compatible code reader)
    [SIGPIC]VX<font color=Red>R</font> with added Courtenay <img src=https://www.vectra-c.com/forum/images/smilies/biggrin.png border=0 alt= title=Big Grin class=inlineimg />

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    Full Member Big Sig's Avatar
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    Egr or Swirl valve! (imo)
    Last edited by Big Sig; 13th May 2008 at 17:43.
    Now I need a turbo to keep up!

  4. #4
    Ex Vec-C Admin & Founder GARY3306's Avatar
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    Quote Originally Posted by Big Sig View Post
    Egr or Swirl valve!
    How do you arrive at that diagnosis then? Yea could well be one of those items (we all know the trouble these two items cause on Vecs), could also be a turbo fault, could be something rattling in the engine which the knock sensor is picking up and retarding the ignition or even a faulty knock sensor or even loose(torque setting is critical for a knock sensor), could be a faulty MAF sensor, could be a faulty throttle pedal position sensor (Either one), could be a faulty temp sensor etc etc etc. lol. Anyway, you may well be right in your diagnosis , lets see what his tech 2 throws up.


    EDIT: PMSL just seen your edit
    [SIGPIC]VX<font color=Red>R</font> with added Courtenay <img src=https://www.vectra-c.com/forum/images/smilies/biggrin.png border=0 alt= title=Big Grin class=inlineimg />

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    Regular Member SRI-150's Avatar
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    could well be anything hopefully not to bad that they have to have it for too long i'll let u's know what it is when i get told

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    Regular Member SRI-150's Avatar
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    well got it back that night to find it exactly the same so told the manager to come with me in it, showed him an he sed ohh yer it should be a lot quicker. let me have a go so he did, went round the block in 1st gear it clears the exhaust, i was like get ur foot off the accelerator its not the exhaust and it doesn't need cleaning out by redlining it constatly. went back tech 2 came up with same problem, boost pressure valve which they had supposedly cleaned out, so we were looking under the bonnet wen he spotted vacuum pipe that had previously fell of and i lost all turbo had rotted underneath and had a hole in it therefore no turbo, he got a new piece of pipe put it on and that was it all sorted. so i rushed home to get the tuning box back on it

    so its all better now jus need the simota back on it tommorow

  7. #7
    Full Member Big Sig's Avatar
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    Quote Originally Posted by GARY3306 View Post
    How do you arrive at that diagnosis then? Yea could well be one of those items (we all know the trouble these two items cause on Vecs), could also be a turbo fault, could be something rattling in the engine which the knock sensor is picking up and retarding the ignition or even a faulty knock sensor or even loose(torque setting is critical for a knock sensor), could be a faulty MAF sensor, could be a faulty throttle pedal position sensor (Either one), could be a faulty temp sensor etc etc etc. lol. Anyway, you may well be right in your diagnosis , lets see what his tech 2 throws up.


    EDIT: PMSL just seen your edit
    Sometimes YOU jump to quickly.... I mearly listed them as the two most common faults that would cause those symptoms. Always a good place to suggest to a (normally) useless dealer. However, next time I won't bother trying to help. Everything on here is peoples opinion, I added my edit to avoid any confusion. Seems I was a little too slow
    Now I need a turbo to keep up!

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    Regular Member glenboy's Avatar
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    Quote Originally Posted by SRI-150 View Post
    well got it back that night to find it exactly the same so told the manager to come with me in it, showed him an he sed ohh yer it should be a lot quicker. let me have a go so he did, went round the block in 1st gear it clears the exhaust, i was like get ur foot off the accelerator its not the exhaust and it doesn't need cleaning out by redlining it constatly. went back tech 2 came up with same problem, boost pressure valve which they had supposedly cleaned out, so we were looking under the bonnet wen he spotted vacuum pipe that had previously fell of and i lost all turbo had rotted underneath and had a hole in it therefore no turbo, he got a new piece of pipe put it on and that was it all sorted. so i rushed home to get the tuning box back on it

    so its all better now jus need the simota back on it tommorow
    Glad you got to the bottom of it mate.....

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    Regular Member foyboy241177's Avatar
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    egr valve faliure and swirll flap faliure (new inlet manifold and egr valve)

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    Regular Member rushy's Avatar
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    Quote Originally Posted by foyboy241177 View Post
    egr valve faliure and swirll flap faliure (new inlet manifold and egr valve)
    Calm down big boy, read the thread its been fixed mate, you'll start scaring people with new manifold prices when its just a hose.

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