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Thread: anyone have any ideas on this problem

  1. #1
    Regular Member daveypower's Avatar
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    Default anyone have any ideas on this problem

    ok so im picking up the sisters 2.2 dti sri 03 vectra next monday as where doing a p/x on cars, she has had the car 2 years now and not 1 problem,

    But the car is serious down on power and i mean serious, it doesnt seem like it holds boost atol, aslo when looking at the actuator on idle, if she revs it up and down to 3/4 rpm the actuator bar moves in and out? is that normal? any other commom problems that might be making it lose power? im guessing it could be a leak in the pipes?

  2. #2
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

    Default

    Could well be leaking vacuum pipe or more than likely the rubber connectors , starting from the vacuum pump on the block check the connectors towards the first actuattor .
    On the output part of the actuattor remove the hose and test for suction by wetting your finger its only 0.6 bar but you should be able to detect it , carry on following the hoses around the engine repeating the test at each actuattor depending on the version you can have 2 or 3 of them.
    At the same time make sure the connectors are attached to the right port, the actuattors are marked on the top of them IN and LOAD ie your turbo and the vacuum diagfram should be connected to load
    Driving vauxhall,s for 30 + years
    and still loving it

  3. #3
    Regular Member daveypower's Avatar
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    Quote Originally Posted by bobssignum View Post
    Could well be leaking vacuum pipe or more than likely the rubber connectors , starting from the vacuum pump on the block check the connectors towards the first actuattor .
    On the output part of the actuattor remove the hose and test for suction by wetting your finger its only 0.6 bar but you should be able to detect it , carry on following the hoses around the engine repeating the test at each actuattor depending on the version you can have 2 or 3 of them.
    At the same time make sure the connectors are attached to the right port, the actuattors are marked on the top of them IN and LOAD ie your turbo and the vacuum diagfram should be connected to load
    thanks very much, ill be giving this a try soon as i can, would you happen to know if the actuattor bar itself should move in an out when reving the car on idle, a previous mechanic said the bar shouldnt be dumping on idle reving and that the diaghram was busted, so i replaced it for her but it still did the same, so i was thinking then it would be the boost solenoid itself. back then i didnt have as much knowledge on the turbos as you would no if the actuattor was gone as you could move it in and out with your hands.

  4. #4
    Full Member bobssignum's Avatar
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    Vehicle : Signum 2.0 DTi

    Trim : Elegance/Elite

    Engine : 2.0DTi

    Year : 2003

    Mileage : 73350

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    Davey do you have the same setup as this and the diagfram you mentioned is the one shown in the picture at the bottom with the white tube coming from it then your problem is your tps throttle positioning sensor ,the large sensor directly opposite the diagfram now some 2.2 dti do not have a tps sensor here but is actually mounted on the throttle mechanism itself. would help to know which version you have
    Driving vauxhall,s for 30 + years
    and still loving it

  5. #5
    Regular Member daveypower's Avatar
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    Bob i dont have the car on the drive just yet lol its a few houses down so not sure on that, but the diagfam im talking about is the 1 beside the turbo, the wastegate control valve diagfram or actuator. thats the one that moves in and out when reving on idle.

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