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Help Please - Vectra 2.5 V6 GSI Cutting Out

Discussion in 'Cavalier, Calibra, Vectra, Signum, Sintra & Insignia owners forum' started by jimadk20, Sep 27, 2007.

  1. jimadk20

    jimadk20 New Member

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    Location:
    Swindon
    Hi, i wonder if anybody can help with a problem I've got.

    I recently bought a Vectra GSI 2.5 V6 and I'm having problems with it.
    When I first got the car I noticed that the idle speed was a bit irratic. With the clutch fully pressed or the engine out of gear the revs go up and down between about 500 and 700. This didn't really bother me so I've lived with it for about 2 months.

    Recently the engine has started to cut out when pressing the clutch down. It doesn't do it all the time but it's obviously really annoying and potentially dangerous when it does.

    I've had this problem on two other Vauxhall's that I've owned (Cav GSI 16V Red Top and Cally 16V Ecotec) and simply cleaned the ICV and Throttle Bodies and It went away.

    I've cleaned the ICV on the V6 3 times now and It hasn't made any difference, I've also cleaned the air filter and this hasn't helped either.

    Does anyone know how I can tell if the ICV's broken without buying a new one or have any suggestions what else I can do to try and stop it cutting out and idle normally.
    Any help would be really appreciated.

    Cheers.
  2. vec 160

    vec 160 VxON Club Member VxON Club Member

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    Location:
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    It could be an air leak or a MAF problem.

    You need to check the fault codes to get to the root of the problem.
  3. jimadk20

    jimadk20 New Member

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    I've been looking for info on how to do the paperclip test on a 2.5 V6 engine but can only find info on the 1.8 and 2.0l vectras.
  4. Gnome

    Gnome Active Member

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    Location:
    Banbury, Oxon
  5. jimadk20

    jimadk20 New Member

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    Its a 1999 face lift model. I had a look at this the other day but wasn't sure wheter to do it or not because it's for a 1.8 engine.
  6. Gnome

    Gnome Active Member

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    Same on my 1997 V6, and it worked. ;)

    don't know if it changed for the facelift's though?
  7. jimadk20

    jimadk20 New Member

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    Location:
    Swindon
    Cheers.

    I've done the paperclip test and got the fault codes 1530 - Air Flow Relay and 0335 - Crank Sensor.I'm going to change the Crank Sensor now, does anybody know if this is simple to do?? Also I'm unsure what to do about the Air Flow Relay.

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