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Thread: Vectra Revving in nuetral-any ideas?

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    Default Vectra Revving in nuetral-any ideas?

    Afternoon,
    Hope I have done this right I am new to this.
    My 03 Vectra C LS appears to be revving in nuetral, revving between 500-1000 rpm for no apparent reason. Can anyone point me in the right direction as to what may be causing this? Should i check spark plugs or something completly different. Any pointers v gratefully received......

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    Sounds like a 1.8 or 2.2 petrol??? Probably throttle body or an air intake leak? Petrol engines not really my thing, sure somewhere else with more knowledge than moi will be along to advise you.
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    1.8 petrol mate yes- someone has told me it could be the air intake. Apologies in advance for my ignorance but....what is the throttle body? Would any of these be expensive to fix? Big jobs? Thanks for the quick reply.

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    Does this engine have a IAC (Idle Air Control) Valve?
    If so, these are well known for becoming dirty and contaminated
    Equally, the EMS only warns when it has failed

    This was the cause of erratic revs on my Vectra B 2.0
    Two were replaced under warranty after 70K miles
    I then cleaned it again after the warranty expired, after every 10K miles

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