2009 TTiD 1/2 Boost - Help!

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Thread: 2009 TTiD 1/2 Boost - Help!

  1. #1

    2009 TTiD 1/2 Boost - Help!

    Hi

    Grateful for any advice/ pointers please?


    Had my 1.9 TTiD Aero from new in 2009, 75k mikes, FSH, no issues. About a year ago my job changed meaning I was closer to home - like 2 miles rather than 50 - so my motoring became very much start stop. This started to take it's toll with the DPF firstly throwing on the Limited Performance. A deliberate trip down the motorway in 4th for 20mins every couple of weeks seems to stop that at least.


    Last week after a steady dual carriageway way trip of about 10 miles, the EML came on, for the first time ever, and the car drove as if in limp mode with zero power. A recovery agent plugged it in to his code reader and said it was the EGR Valve. He cleared the code and followed me back home. The EML light was indeed off but the car drove as if it was on half power with the boost gauge only going about halfway.


    I've fitted a new EGR; cleaned the EGR pipe (that was heavily coked up with only one of the three holes visible); fitted a new MAP sensor (old one just looked like a lump of coal!); and cleaned the throttle body... And it still drives the same - like 1/2 boost.


    Having a look under the bonnet with it revving the boost pipe to the throttle body collapses at about 3000rpm+... so I swapped over the boost solenoids but that also made no difference.


    I'm now thinking Swirl Valves - stuck? (Hopefully not broken off and sucked through and stuck in a turbo!!!! Too much research can be very frightening)... But inlet off to have a look is a job beyond my ability I'm afraid.


    Any thoughts? - is there any way of checking the swirl valves function without removing the inlet? Or am I off to a specialist with my trousers down?


    And as a final thought once fixed (fingers crossed), accepting the journeys I'm now doing, reckon I'm going to have to part with the car or it's just going to clog up again?


    Thanks in advance


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  3. #2

    Re: 2009 TTiD 1/2 Boost - Help!

    Have you changed the bost pipe that collapses under load ?
    It shoukd not do that check for splits or leaks in induction hoses .
    have you got opcom ? That's a good tool to have as it can give you live data read outs .
    MSD REGISTER 26101 NOCTURNO-BLAU-MET

  4. #3

    Re: 2009 TTiD 1/2 Boost - Help!

    Hi & thanks very much for your reply.

    I've not changed the pipe yet as there were no splits or leaks I could find.

    i've not got Opcom just an Autel AutoLink AL319.

    Having driven the car today it's come up with a couple more trouble codes:

    P0105 Manifold Absolute Pressure/Barometric Pressure Circuit; &
    P2279 Intake Air System Leak

  5. #4
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    Re: 2009 TTiD 1/2 Boost - Help!

    Troubles are probably DPF related ie too high a back pressure and probably blocked.
    I would get access to a Tech2 or Opcom and force a regen you also have other leak issues.
    If you run these cars on short journey cycles you need to get them sorted via a remap to achieve reliability
    and meticulously avoid failed regens.
    Whats your oil level like?

  6. #5

    Re: 2009 TTiD 1/2 Boost - Help!

    Hi & thanks very much for your reply.

    I'll see if I can access something to force a regen.

    The oil level and appearance looks normal - just had a service about month ago at Bond Street Saab a local specialist.

    Once fixed (fingers crossed) would a remap make it able to cope with my short journeys or is it now just the wrong tool for the job?

  7. #6
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    Re: 2009 TTiD 1/2 Boost - Help!

    Quote Originally Posted by spoonhead View Post
    Hi & thanks very much for your reply.

    I'll see if I can access something to force a regen.


    Once fixed (fingers crossed) would a remap make it able to cope with my short journeys or is it now just the wrong tool for the job?

    Remap should sort but really depends on the current state of the inlet manifold and DPF.
    Any remap should take care of further swirl flap and EGR issues and prolong the life of the DPF.
    Its your choice if you want to increase the BHP too...the TTID's can easily go to 200-250bhp although the higher you
    run the risk of early Turbo failure.
    Contact the user Teapot (Vectra C forum) or Teapots (uksaabs) he can be highly recommended (think he is on Faceache too).
    He has worked his magic on four of our cars.

    Opcom is cheap (£15?)and should be able to force a regen without having to pay someone silly money to do it.
    You will also be able to see the back pressure from the DPF which will indicate if its blocked or not.

  8. #7

    Re: 2009 TTiD 1/2 Boost - Help!

    Thanks again for your reply.

    Ordered an OpCom and waiting for it to arrive...

    In the meantime I've continued checking the car and going over the work I've already carried out...

    As I previously mentioned the original MAP sensor looked like a piece of coal and so I replaced it. I used Europarts and their number plate parts finder tool choosing the Bosch part to replace like for like.

    When the new replacement part arrived I noticed that the part number was different to the original - original - 0 281 002 576, Replacement - 0 281 002 437... so I gave them a call to query it, the person I spoke to tapped away at their keyboard and told me that the original part number had been supeceded by the replacement and so it was the same - and I took them at their word.

    Having read another thread on UKSabbs about MAP sensors it seems that the 'pressure range (p1...p2) are different!?? - Im on my iPad and unfortunately it won't let me attach the screen shots - but the specs are on pages 56 & 60 of here -
    https://aa-boschap-uk.resource.bosch...249.pdf#page49

    Does anyone know if this is likely to be causing my problems?

  9. #8

    Re: 2009 TTiD 1/2 Boost - Help!

    Update - Europarts acknowledged wrong MAP sensor and swapped for the correct one.
    Fitted it with fingers crossed - no more P0105 or P2279 codes, no EML, but the car still drives the same with max 1/2 boost and the boost pipe collapsing at 3000rpm+

  10. #9
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    Re: 2009 TTiD 1/2 Boost - Help!

    If the pipe is collapsing then that probably means the actuator or VNT in the turbo is stuck.
    You really need to get at the actuator rod and see if you can physically move it back and forth...should move fairly easily under finger pressure.

  11. #10

    Re: 2009 TTiD 1/2 Boost - Help!

    Update: checked actuator rods, both moving freely, so gave up and dropped into Bond Street Saab and let them have a look...
    Worst case scenario confirmed - swirl flap fragments stuck in the big turbo .
    Pants.

  12. #11
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    Re: 2009 TTiD 1/2 Boost - Help!

    Logically the swirl flaps are the wrong side of the engine to go anywhere near the turbo...they would have to go through the cylinders first and cause all kinds of mayhem.
    Although I do agree there must be something wrong if the vacuum control cant move the actuator.
    Maybe the diaphragm in the actuator itself or the pipe is blocked?

  13. #12

    Re: 2009 TTiD 1/2 Boost - Help!

    Final update I'm afraid...

    The garage tested the actuators and confirmed they were working fine.

    Apparently they've had a few TTiD's where the flaps have broken off and entered the engine - some they described as being like beans in a tin rattling round inside the cylinder causing chaos; others have been sucked through but damaging the turbo(s); then finally they've has a couple like mine where the fragments have lodges and jammed the turbo... Only wish I'd heard about the swirl flap issues before hand as I'd have definitely had them removed.

    Its been an extremely hard decision, but I made my final journey in the car the other day and sadly sold it to webuyanycar.

    Thanks very much indeed to everyone who kindly took the time to offer they're advice to me - it was very much appreciated.

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