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Why does it take 5 minutes for my idle stablize?

Posted by squid267, Jan 16, 2014

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  1. squid267

    squid267 Proven Member

    107
    2
    Joined Jan 14, 2012
    Worcester, Massachusetts
    Curious why it take my idle awhile to stablizes. It starts at 2k and slowly comes down to 1k.

    FIAV Blocked off.
    ISC set correctly.
    No boost leaks.

    Any ideas? Its not a huge issue but I don't want it to become an issue.
     
  2. 805LegendDSM

    805LegendDSM Proven Member

    81
    1
    Joined Apr 14, 2011
    Oxnard, California
    Do you have your Check engine light on?
     
  3. squid267

    squid267 Proven Member

    107
    2
    Joined Jan 14, 2012
    Worcester, Massachusetts
    Nope no CELs
     
  4. Phantom DSM

    Phantom DSM Proven Member

    540
    10
    Joined Jan 28, 2007
    Dallas, Texas
    Since you have the FIAV blocked off the valve stays open longer , no coolant is passing through the lines. Your car will take a bit longer to idle better.
     
  5. basshead

    basshead Proven Member

    33
    10
    Joined Sep 21, 2007
    Sweden, Europe
    It's just like Phantom said.

    The way to adjust this properly is to tune the ISC coolant maps.

    Do you have a way of tuning your ECU?
     
  6. josh408

    josh408 Proven Member

    397
    65
    Joined Jan 29, 2011
    Bay Area, California

    You said it in your post. You have a block off plate on your fiav
     

    Street Build 3K  4

    1998 Mitsubishi Eclipse GSX
    11.935 @ 118.24 · 2G DSM
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  7. squid267

    squid267 Proven Member

    107
    2
    Joined Jan 14, 2012
    Worcester, Massachusetts
    The FIAV was blocked off when I bought the engine. Had no idea what it does. I have ECMLink v3. Can I use that to tune the ISC coolant maps?
     
  8. squid267

    squid267 Proven Member

    107
    2
    Joined Jan 14, 2012
    Worcester, Massachusetts
    Oops my FIAV is not blocked off my EGR is.
     

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