Engine cutting out

  1. Saxperience Forum Bum Joined: Apr 2013 Jarrow Posts: 4022 2003 Icelandic Grey 16v VTR 1991 Daihatsu GTti
    #1
    Had an ongoing problem with the engine idling badly (hunting) and sometimes just stalling when in coming to a stop.

    So I went through the motions of:
    Replace ICV
    New plugs
    New coil pack
    Replaced MAP sensor
    Checked for vacuum leaks

    When I replaced the MAP sensor I disconnected the breathers for better access and forgot to connect them back up. Turned the key and happy days idling perfect again. However, when I connected the breathers back up it just stalled again.

    So I disconnected the below and it idled perfectly again.



    I know this hose goes to the black canister under the drivers wing, which is a filter.

    So question is, this hose is the obvious problem. Any ideas how to sort this out? I've left it disconnected for now, but I'm assuming that this is causing some back pressure which is making the engine stall.

    All ideas welcome.
  2. Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182
    #2
    seems that pulling a hose off is giving it enough air bleed for it to idle. Are you sure the ICV is working?
  3. Saxperience Forum Bum Joined: Apr 2013 Jarrow Posts: 4022 2003 Icelandic Grey 16v VTR 1991 Daihatsu GTti
    #3
    Yeah mate, first i just cleaned it then I swapped it for one I knew was working and it was exactly the same.

    I've gave the hose a good squeeze all the way along to make sure there's no blockage. Really stumped, as I think I've narrowed it down but you never know if that is the actual cause.

    To be fair, I'm dropping the 16v in it soon but would like to get to the bottom of it.
  4. Saxperience Post Whore Joined: Apr 2011 Posts: 9100 Amazon green VTR 16v, Inferno RS clio 182
    #4
    it shouldnt be the cause, I dont even have that pipe connected on my 16v at the moment just blocked it off on the inlet. All it does is vent a bit of a tank petrol vapour back to the inlet every so often via a solenoid on the charcoal cannister.
    Sounds to met like you arent getting enough air to idle properly, hence it sucking it in via that newly open pipe where you've taken it off. On these mk2 vtr units is the ICV integrated into the TB like the VTS or somewhere else? never dealt with one personally.