Irish Subaru Drivers Club Forum - Powered by vBulletin

#

Results 1 to 8 of 8

Thread: Idle issue

  1. #1
    Full ISDC Club Member
    Join Date
    Sep 2015
    Location
    wexford
    Posts
    333
    Thanks
    234
    Thanked 254 Times in 118 Posts
    Rides
    0
    Rep Power
    5

    Idle issue

    My v2 sti has developed an idle issue over last few days.

    After I drive it and maybe 2/3 hours later I start it , after few seconds revs drop to nearly stalling .
    Then maybe 30 seconds later runs perfect . This morning driving to work it was fine , yet heading to shop earlier the above happened.

    Any1 any experience of this issue or what it could be ?

  2. #2
    Full ISDC Club Member Keadeen's Avatar
    Join Date
    Apr 2013
    Location
    Wicklow
    Posts
    1,907
    Thanks
    304
    Thanked 622 Times in 373 Posts
    Rides
    2
    Rep Power
    13
    Could be a couple of things...

    Would start by cleaning idle control valve - easy to do and no cost involved.

    If you have diagnostics would check intake temp sensor and coolant temp sensor values (if off then replace sensor)

    Last but not least... could be MAF getting tired.
    Although because of cost I wouldn't rush out to get a new one; however, it does make sense to check it to make sure it is working properly as it will affect A/F ratio throughout rev range if getting tired and can lead to det if really bad.
    96 STI v3
    04 WRX SL
    07 Hawkeye STI UK Type

  3. The Following User Says Thank You to Keadeen For This Useful Post:

    ALAN83 (16-07-2018)

  4. #3
    Member Number 2766
    ISDC Club Treasurer
    scoobysub's Avatar
    Join Date
    Nov 2008
    Location
    kilkenny
    Posts
    11,849
    Thanks
    2,563
    Thanked 2,482 Times in 1,569 Posts
    Rides
    1
    Rep Power
    10
    Can you hear the fuel pump could be on the way out , when were the plugs changed last . ,coil pack , etc etc . Rule out the problems you can and that only leaves a few
    colin, richard, bertie, frank, gone but not forgotten.

    Peter marks account Reopened in Style!!!

  5. The Following User Says Thank You to scoobysub For This Useful Post:

    ALAN83 (16-07-2018)

  6. #4
    Full ISDC Club Member
    Join Date
    Sep 2015
    Location
    wexford
    Posts
    333
    Thanks
    234
    Thanked 254 Times in 118 Posts
    Rides
    0
    Rep Power
    5
    Quote Originally Posted by Keadeen View Post
    Could be a couple of things...

    Would start by cleaning idle control valve - easy to do and no cost involved.

    If you have diagnostics would check intake temp sensor and coolant temp sensor values (if off then replace sensor)

    Last but not least... could be MAF getting tired.
    Although because of cost I wouldn't rush out to get a new one; however, it does make sense to check it to make sure it is working properly as it will affect A/F ratio throughout rev range if getting tired and can lead to det if really bad.
    Gonna give idle control valve a clean , new maf in car

  7. #5
    Full ISDC Club Member
    Join Date
    Sep 2015
    Location
    wexford
    Posts
    333
    Thanks
    234
    Thanked 254 Times in 118 Posts
    Rides
    0
    Rep Power
    5
    Quote Originally Posted by scoobysub View Post
    Can you hear the fuel pump could be on the way out , when were the plugs changed last . ,coil pack , etc etc . Rule out the problems you can and that only leaves a few
    Plugs changed nearly 2 years ago , coil packs over a year ago .
    I can hear fuel pump

  8. #6
    Member Number 2766
    ISDC Club Treasurer
    scoobysub's Avatar
    Join Date
    Nov 2008
    Location
    kilkenny
    Posts
    11,849
    Thanks
    2,563
    Thanked 2,482 Times in 1,569 Posts
    Rides
    1
    Rep Power
    10
    Check plugs after that length of time 2 years is a long time on plugs
    colin, richard, bertie, frank, gone but not forgotten.

    Peter marks account Reopened in Style!!!

  9. #7
    Full ISDC Club Member
    Join Date
    Sep 2015
    Location
    wexford
    Posts
    333
    Thanks
    234
    Thanked 254 Times in 118 Posts
    Rides
    0
    Rep Power
    5
    Quote Originally Posted by scoobysub View Post
    Check plugs after that length of time 2 years is a long time on plugs
    I planned on changing fuel pump so will order one up this week anyway

    I thought i would get a bit longer than 2 years out of plugs ,done 8,000klms in that time .

    Cut the knuckles off myself changing them the last time

  10. #8
    Member Number 2766
    ISDC Club Treasurer
    scoobysub's Avatar
    Join Date
    Nov 2008
    Location
    kilkenny
    Posts
    11,849
    Thanks
    2,563
    Thanked 2,482 Times in 1,569 Posts
    Rides
    1
    Rep Power
    10
    Be handy the second time then only 20-30min Job when engine is cold
    colin, richard, bertie, frank, gone but not forgotten.

    Peter marks account Reopened in Style!!!

  11. The Following User Says Thank You to scoobysub For This Useful Post:

    SCOOBYCOLM (16-07-2018)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •