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Not aircooled but does anyone have any experience with......
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<blockquote data-quote="autocraftkid" data-source="post: 519320" data-attributes="member: 116"><p>I work on modern diesels all day long at my place so got pretty good experience of this engine, I'd say it's likely the VNT mechanism in the turbo has sooted up and the vanes are stuck in the high boost position causing it to overboost instead of regulating correctly, pretty common on these engines in general if doing lots of short journeys, in my experience driving it hard will rarely cure the problem once it has developed and it will need cleaning using a turbo clean kit which can generally improve it to a point it won't go into limp mode again, the only way to fully clean is to strip turbo and manually remove the carbon deposits, not many places fancy doing this though as it's pretty time consuming and requires a degree of knowledge.</p><p> </p><p>Is the turbo very noisy ? if it is it may be time to replace it anyway as this can also be a cause of limp mode as the impeller can stall when it comes into contact with the housing due to worn bearings, you don't say if it's the 140bhp or the 170bhp model, if it's the latter it will have a DPF and this could also be causing you problems, did the garage who looked at it get any stored fault codes when they took a look at it, it's the first place to start really on any modern car as everything else is just guessing. If you get stuck with it and need someone to look at it I am in Birmingham and would be happy to do so</p></blockquote><p></p>
[QUOTE="autocraftkid, post: 519320, member: 116"] I work on modern diesels all day long at my place so got pretty good experience of this engine, I'd say it's likely the VNT mechanism in the turbo has sooted up and the vanes are stuck in the high boost position causing it to overboost instead of regulating correctly, pretty common on these engines in general if doing lots of short journeys, in my experience driving it hard will rarely cure the problem once it has developed and it will need cleaning using a turbo clean kit which can generally improve it to a point it won't go into limp mode again, the only way to fully clean is to strip turbo and manually remove the carbon deposits, not many places fancy doing this though as it's pretty time consuming and requires a degree of knowledge. Is the turbo very noisy ? if it is it may be time to replace it anyway as this can also be a cause of limp mode as the impeller can stall when it comes into contact with the housing due to worn bearings, you don't say if it's the 140bhp or the 170bhp model, if it's the latter it will have a DPF and this could also be causing you problems, did the garage who looked at it get any stored fault codes when they took a look at it, it's the first place to start really on any modern car as everything else is just guessing. If you get stuck with it and need someone to look at it I am in Birmingham and would be happy to do so [/QUOTE]
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EarlyBay Forums
General Earlybay Chat
Not aircooled but does anyone have any experience with......
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