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Thread: vectra 2.0 turbo z20net lumpy idleing (can anybody come help )

  1. #1
    Regular Member matrix1979's Avatar
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    Default vectra 2.0 turbo z20net lumpy idleing (can anybody come help )

    hi people im still having problems with my 07 plate veccy 2.0 turbo z20net engine running lumpy as hell on idle along with strong exhaust smell which im sure its running rich due to the back boxes being all sooted up and my mpg droped . I have done many of things changed the maf sensor , air filter . air box mod, checked the turbo seals were nt leaking, cts sensor, flexi looks fine , did nottice 2 screws on the inlet manifold were loose but all tightened up now , has no error codes , the lumpy idle get worse when the engine gets hot , Im just coming to the end of my teather with it and want to just get to the bottom of it if anybody could come have a look it i would be very greatfull i would pay you of course i live in kings lynn in norfolk or im willing to travel to you if your not to far from me ,

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    Regular Member Kev_A's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : Z20NET

    Year : 04

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    Have you checked your plugs, coil packs and fuel filter bud?

  3. #3
    Regular Member matrix1979's Avatar
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    plugs have recently been changed 1 k ago coil packs are fine been tested , as for fuel filter will change this coming week . u know where this is situated exactly ?

  4. #4
    Regular Member Kev_A's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : Z20NET

    Year : 04

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    I beleive it's under the car O/S/R, I have mine to do too

  5. #5
    North West Regional Organiser paulvectrac's Avatar
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    Vehicle : vectra

    Trim : vxr

    Engine : 2.8 v6 turbo

    Year : 2007

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    What about the maf
    Vectra vxr custome remaps egr deletes dpf and diagnostic work all remaps are custome bench tuning avalible all genuine equipment PM for info

  6. #6
    Regular Member matrix1979's Avatar
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    changed that paul ;( still no joy

  7. #7
    Regular Member matrix1979's Avatar
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    might give courtneys at north walsham a call tommoz see what they say ;S

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    Sounds like its the good old EGR valve clogged! Have you done that ? You can clean them but I found a new one will last longer with out cleaning.

  9. #9
    Regular Member Steven's Avatar
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    EGR on a petrol turbo...?

  10. #10
    Regular 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

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    When mine was doing this I changed the fuel filter and it sorted it.

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