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Thread: Intermitant Problems Starting - Revs limited to 2K

  1. #1
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    Default Intermitant Problems Starting - Revs limited to 2K

    Hi All,

    I'm hoping that this forum will prove as useful to me as it obviously has to so many others.

    I am having intermittent problems when starting my car, the car will start but when I try to accelerate I have no power if I just sit and rev the engine it will be limited to 2K Revs, if I stop and start the engine a number of times eventually I'll get full power and be able to drive. When the car start OK I can drive it normally and have no noticeable problems.

    Sometimes when I start the car it'll let me Rev up to 3.5K and if I then drive off the fault will clear and I will get full power and be able to drive normally. When I took the car into the local garage they plugged the computer in and could see an EGR fault and so have replaced this, they are now telling me that the linkage bar on the Induction Manifold is broken and that this is causing the problems but apparently that does not tie in with the description I give them about the limited Revs.

    I am also told that I should not be able to press the brake on my car and rev the engine, that the ECU should stop this from happening - Is that right?

    And that if the car dropped into limp mode (which is what I thought it was doing by limiting the revs to 2K) the car would not drop out of limp mode again until someone plugged a computer in and cleared it.

    Does anyone have any thoughts on what my problem could be? (besides a lack of money!) or any suggestions as to diagnostics that I could undertake?

    Thank for any advice.

    Dave

  2. #2
    VIP-Member Caveman_nige's Avatar
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    Vehicle : Vectra and a Signum

    Trim : top of the line in both

    Engine : Z18XE,Z19DTH,Z20NET

    Year : 2006

    Default

    what type of engine have you got?
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



  3. #3
    Regular Member pugs,signum's Avatar
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    If the link bar on the inlet manifold is off then there your problem!
    Mine came off and it had no go in it until turbo kicks in, changed inlet manifold (swirl valves) and all was fine after that!

    search for swirl valves n have a read!

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    Quote Originally Posted by Caveman_nige View Post
    what type of engine have you got?
    I've got the 1.9CDTI 150.

    (and no knowledge of cars at all really!)

  5. #5
    Regular Member pugs,signum's Avatar
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    not serprised your car is struggling as its getting on a bit now lol its 1.9cdti (150) and was first registered in 1954 lol

    only having a bit of fun dont mind me

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    Quote Originally Posted by pugs,signum View Post
    not serprised your car is struggling as its getting on a bit now lol its 1.9cdti (150) and was first registered in 1954 lol

    only having a bit of fun dont mind me

    Hmmmm yeah - what can I say I've tried to look after it. Ok it's a 54 plate actually registered 2004, I'm just pleased I got my name right in the profile.

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    Quote Originally Posted by pugs,signum View Post
    If the link bar on the inlet manifold is off then there your problem!
    Mine came off and it had no go in it until turbo kicks in, changed inlet manifold (swirl valves) and all was fine after that!

    search for swirl valves n have a read!

    Thanks for the feedback - I've had a look at the swirl valves posts and it seems everyone talks about poor performance, admittedly my car is an automatic so perhaps it is hitting the car harder than manuals but is this the sort of problem that would clear itself and be as intermittent as I'm suffering from?

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    My swirl bar has been off the car for nearly 70000 miles and its only recently that I started to experience similar problems on startup and the odd time at round abouts where the engine would take a lifetime to get to 2000revs and then it would suddenly start to rev as normal ....is there a chance that the position of my swirl valves were in a sweet spot (open/closed/half open) and that could be why I never experienced any problems

    No doubt my inlet system is as gunked up as a gunked thing...so the build up may also have got to a critical level?? Can the inlet manifold be cleaned or is replacement the only way?

    120000 miles mostly A/B roads & Motorway driving mainly

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