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Thread: HELP!! Fed up vec owner - now having power problems

  1. #1
    Regular Member Vecmaniac's Avatar
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    Default HELP!! Fed up vec owner - now having power problems

    How fed up am I.... Following on from this thread - http://www.vectra-c.com/forum/showthread.php?t=99666 I now have a power loss problem under 2500 rpm! I've had this before leading twice to a new egr valve and once to a new inlet manifold!!

    I had the egr valve out tonight and gave it a clean, although it wasn't that bad with the solenoid free and just the slightest resistance form the valve itself which was sorted with a squirt of wd40.

    Refitted but no improvement.

    Checked the actuator rod on the inlet manifold but as the manifold was renewed mid last year as I suspected it was fine and moved without problems when the engine revved.

    No management lights just a dangerous lack of power... I am fed up to the back teeth now and this will be the last VX I own after almost 20 years of them!!!

    I've never had a car like this...EVER!!

    Bit of a lame question... would an overdue oil change cause a loss of power under 2500rpm and lower than normal fuel consumption?

    One other question... Can an EGR valve fail even though it is free and no management light is displayed?

  2. #2
    Regular Member degsy1234's Avatar
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    a mate of mine has this problem so he spoke to a mechanic he goes to who said he will block the egr valve off! He said its the worst thing vx ever put on a car and you can just block it off all it does is burn left over exhaust fumes.... i'll see how he gets on

  3. #3
    Regular Member Vecmaniac's Avatar
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    Cheers for that but I think (could be wrong here) that there are gas flow detection issues that can't be overcome if the egr is blanked off on a cdti 150?

    What I really need to know is of an egr can be faulty even with no management lights and all components on it are moving free on inspection.

  4. #4
    Regular Member degsy1234's Avatar
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    ill let ya know what happens his is a saab 1.9 150 diesel same engine i believe

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    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

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    The CDTI (FIAT JTD) engine needs to detect the the mass of gasses from the EGR or you will get a fault lamp. This cannot be coded out with Tech 2 etc, however there are some maps that have had the software rewritten to get around this and allow thw EGR to be blanked.

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    Regular Member Vecmaniac's Avatar
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    Thought as much, that makes sense.... Getting back to the question.... Can an egr be faulty when not seized and no fault light?

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

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    Stupid question but does the rod move when the accelerator is pressed ie revved up passed 2,500rpm? If not then the swirl valve drive module has given up.

    Ignore this

    Gazza4

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    Regular Member Vecmaniac's Avatar
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    Yeah, I checked that right after the egr and it's fine (the inlet manifold was replaced mid last year)

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    Vehicle : CDTI 150

    Trim : Design

    Engine : Z19DTH

    Year : 2005

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    When you mean not seized whilst the bit that sticks out of the solenoid may be free to move you need to remove the solenoid by drilling and knocking the plunger out then cleaniong and lubricating.
    An EGR can be sluggish this can cause the symptoms you're experiencing, occasionally no matter how well cleaned only a replacement will cure.

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    Vehicle : Golf 7

    Trim : GTD

    Engine : 2.0 TDI 184PS

    Year : 2014

    Mileage : 40000

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    Quote Originally Posted by lesj View Post
    only a replacement will cure.
    probably better off with drilling the old one, knocking out the solenoid and lubricating it as the how2 shows as this works and probably better in the long run.

    Gazza4

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