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Thread: 1.9 CDTI running a bit rough when first started, seems a bit slow at low revs too

  1. #1
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    Default 1.9 CDTI running a bit rough when first started, seems a bit slow at low revs too

    Well, I wasn't expecting this lol

    Just started my car, it's been sat for a day or so, so was totally cold, and for the first few seconds of running it sounded a bit rough and wasn't running too well or too quietly.

    Runs fine after a few seconds, but the first instance when it's cold it seems a bit rough.

    Also, I noticed this on the way home from collecting it, when it's on boost, and above sort of the 1800rpm mark, it seems fine, but at low revs, around the 1500 rpm, it feels totally flat. I was driving uphill at about 50 in fifth and it lost speed quite quickly. Is it just that I'm not used to driving a diesel, or is it need of something.

    Have I bought a dog? Do I need to stick it on ebay quick?

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    Regular Member the-wizard's Avatar
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    Vehicle : vectra-c

    Trim : sri

    Engine : cdti

    Year : 2004

    Mileage : 98,000

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    Is it 120 or 150?, you need to check the inlet manifold if its a 150(for signs of wear), and the EGR and boost sensor along with the throttle body for cleaning, look in the 'how 2' section of this forum these jobs are fairly straight forward with little skill involved.

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    Well, it was sold to me as a 150, but when you plug the reg number into the Direct Line website, it comes up as a 120, and judging by the performance, I'd guess it probably is a 120. Any way to tell?

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    Regular Member Rapala's Avatar
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    The 150 16 valve engine has its oil filler cap on the right hand side of the engine near the battery cover and the oil filler cap is at the front left near the air filter housing on the 8 valve 120 engines

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    funny you should say that, mine is a 150 and the hpi check came back as a 150 but the insurance company insisted it was a 120 and finally had to accept it was their system that was wrong (still charged me for insuring a 150!!). if i give vauxhall the reg it also comes up as a 150 too, wierd!

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    Just to confirm, it's a 120PS model!

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    Huh, so you gonna go back to the seller?

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    if you've been missold - take it back and get your money back

    otherwise this sounds like egr issue. if your gonna keep it give it and boost sensor a clean and then see if that improves things.

    whilst there i would also check boost pipes and intercooler hoses to make sure all in good order with no cracks

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    i would be going berserk by now if i'd been missold a car like that!! they've obviously been desperate to offload it before it costs them money (just like the previous owner of my car) but to lie about the version to make it more desirable, thats just low! kick some bum, you have rights even if it was a private sale!

  10. #10
    Regular Member Marky's Avatar
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    Take the car back as you have been mis-sold.

    The 150 commands a substantial premium over the 120 models.

    So ask for a full refund or £500 to £1000 back if you are happy with the car otherwise.

    What colour is the 'i' on the CDTi badge on the boot??
    A red 'i' is for the 150bhp model, but some cheeky %$%$ could have swapped it.

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