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Thread: Very poor performance 1.9 cdti

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    Default Very poor performance 1.9 cdti

    Hi,
    Ive been reading this thread (http://www.vectra-c.com/forum/showth...t-pipes/page20) as my brothers 1.9 cdti is really performing badly and the engine management light keeps coming on. Checked it for him and the error codes pointed to an air leak. checked all the pipes, bent them etc all look good but ill replace for him eventually. So I kept reading and took the advise and checked the EGR, whilst caked with soot the movement was very good so just cleaned it off a bit and refitted. Moved to the boost solenoid and this was very very dirty. Cleaned it with carb cleaner the best i could, popped it back in went for a quick spin and the car wasnt smoking anymore and ran lots better. Well better than it was!
    Fired it up this morning and we are now im getting a P1109, the dreaded swirl activator.
    now the car goes into limp mode as soon as you touch the throttle. Is this really the Swirl? Has this had a knock on effect, fix one thing then along comes another?
    Any help would be appreciated.

    Thanks
    Simon

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    Have you looked at the swirl flaps? , maybe the carb cleaner cleaned some of the inlet manifold and it ended up gunging it up near the swirl flaps?

    If the EGR was that caked up with soot then the inlet manifold will be the same , although unfortunately the EGR is allot more robust than the swirl flaps..

    The only way you will know is to look into it.
    Last edited by mon; 7th August 2012 at 10:26.

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    Double post
    Last edited by mon; 7th August 2012 at 10:26. Reason: Double post

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    Thanks,
    Ill take it off tonight, is there an easy way to look or test the swirl flaps?
    Simon

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    Not sure its an easy job reading more on the subject,

    Have a look at the How2
    http://www.vectra-c.com/forum/showth...45#post1338145

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    I had the P1109 code - it was intermittent and rendered the car useless when it kicked in - a new actuator later and a manifold clean I'm assured its as good as new - time will tell but its a pain in the backside if I'm honest, its the most troublesome part I've ever come accross!

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    Thanks for the replies.
    Ive just given it a damn good clean - Well the best I can inside the manifold area. Took it out and I am no longer getting that dredded code. I am however still making my rear view mirror look worse than a working mens club before the banned smoking!
    I have cleaned the boost pressure sensor again as it was chocked a bit again and it seems to perform better even with all the smoke. Under load though I get a P2279, Intake Air system leak. I have checked the boost solenoid pipes as said before and all look sound. The big pipe from the intercooler also looks good, any more I should check?

    Thanks

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    Default

    Have someone rev the engine past 3,000rpm (2,500rpm should be ok) and you watch the 3rd swirl pot (regardless of the state of the swirl bar) - it should move from the 10 o'clock position to the 2 o'clock position. if it doesn't the actuator has packed in. Another common problem regarding air leaking is the intercooler.

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    Quote Originally Posted by GazCDTI150 View Post
    Have someone rev the engine past 3,000rpm (2,500rpm should be ok) and you watch the 3rd swirl pot (regardless of the state of the swirl bar) - it should move from the 10 o'clock position to the 2 o'clock position. if it doesn't the actuator has packed in. Another common problem regarding air leaking is the intercooler.


    The smoke you see pouring out the back is cack that has loosened itself from insid the manifold. It should die down after a few good drives. Mine was smoking like a trooper before after the manifold clean and Swirl Actuator replacement.

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    I also thought it would be the cack but it still hasnt calmed down. Could the boost pressure switch be playing up?

    Simon

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