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Thread: engine managment

  1. #1
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    Default engine managment

    Hey not sure if this is the right section but i'll try it.
    The other week my engine managment light came on ( little car with spanner through it) so I took it to my local vauxhall dealer who plugged it in and said there's nothing wrong and just cleared it.
    A couple of days later it came back so I went back down and plugged it in and the tech2 said somthing pressure not plausible with boost pressure (memorys not to good sorry) and then found a boost pipe loose on the actuator on the turbo so put it back on and cleared the fault again.
    It came back last nite and im fed up with my garage playing around with it and getting nowere.
    Has anyone else had this problem or know what it mite be? any help would be appreciated oh and its a 2.2dti sri.
    Thanks
    Alex

  2. #2
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    Have a look under the bonnet for loose/split/damaged vacuum pipes and/or air pipes to see if one is broken or has dropped off again.

    When you get fault codes read, always get the fault code number from the garage - there's a big list of all the fault codes on this website that you can check it against. You may want to consider buying a fault code reader (tricky for the old 2.0 and 2.2 DTI) or seeing if anyone on the forum who is local to you has one that you can borrow.

    One known issue with the old 2.2DTI engine is that the air/boost pressure sensor in the inlet manifold gets dirty and reports invalid pressures. The computer puts the car into 'limp home' mode as it thinks that there may be something wrong with the turbo. The error description is something like 'boost pressure out of range'. This used to happen on mine when accelerating and could be temporarily cleared by limping to the side of the road and turning the ingition off, but would happen again at some point when accelerating. I had the boost pressure sensor cleaned and the fault has not re-occured.

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    just been reading thru a few threads and came across yours and think you may have helped me out with an ongoing prob going to have a look at the boost pressure sensor as a lot of threads i've looked all seem to mention it with the same sympton probs! thanks

  4. #4
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    Oh well, the problem has come back now, although not as badly. The error code is the same as last time, so I'm going to get the charge (boost) pressure sensor changed.

    I'll also double-check all of the vacuum hoses and air pipes first, just in case one of those has split or dropped off. It would be nice if it was as this would probably be much cheaper and easier to fix!

  5. #5
    Regular Member Big Sig's Avatar
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    The hoses do split and are about £220 for a set, cannot be bought on their own. You can take the boost pressure sensor out and clean it with come carb cleaner and a gentle brushing, its probably all covered in crap.

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