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Thread: Need help, veccy 1.6 poor performance..

  1. #1
    Regular Member bedo13's Avatar
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    Unhappy Need help, veccy 1.6 poor performance..

    hi every one..
    I've vectra c 1.6 facelift..
    Car has very bad performance after reaching RPM 5 on 1st gear..
    On 2nd,3rd,4th and 5th gears , car not passing RPM 4.7, and if it reach 5 it return back to RPM 4 with bad acceleration on all gears..
    15days ago it gives me Knock sensor error, and I changed it but with no improvment in performance but no error appeared in dashboard...

    Any idea??

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    1.6 vec C , really ??

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by bembo449 View Post
    1.6 vec C , really ??
    It's in Egypt, anything is possible!

    Suggest taking the car to a mechanic, as diagnosis for such a fault is going to be difficult

    How old are the spark plugs / leads?

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    Regular Member bedo13's Avatar
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    Vectra c 1.6 presents only in egypt..
    It's the same engine of Astra H. --Z16XEP--

    No fault code with diagnostic device..
    Spark plugs are new, yesterday..

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    Quote Originally Posted by bedo13 View Post
    Vectra c 1.6 presents only in egypt..
    It's the same engine of Astra H. --Z16XEP--

    No fault code with diagnostic device..
    Spark plugs are new, yesterday..
    do they have an EGR valve i wonder ??

  6. #6
    Regular Member bedo13's Avatar
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    I dnt Know..
    How can I know this??

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    Quote Originally Posted by bedo13 View Post
    I dnt Know..
    How can I know this??
    sorry , thinking out loud , i tell you what it could be !? the catalytic convertor , seen this before on many different makes , partially blocked CAT causing poor accelration !

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    Regular Member bedo13's Avatar
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    thanks alot
    But i dnt think its the CAT as exhaust flow and engine performance is good when the car is stopped but while moving it's so bad

    What about EGR what is its poition?

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    Regular Member bedo13's Avatar
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    any help?

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    The Vec C 1.6 was sold here in Slovenia too

    I don't have much experience with this engine, but could be the leads to the spark plugs, coil pack (if it has that??), crankshaft sensor, camshaft sensor...don't know. Anything strange on the diagnostics?

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