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Thread: Causes of high idle and idle surge...?

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  1. 07-14-2009 01:57 PM #1
    tanz45's Avatar
    tanz45
    tanz45 is offline Throttle Jockey
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    No SES?

    Vacum leak, intake gaskets, intake cracked, fuel?
    2013 CC 5.3
    81 C10 LS1 project
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  2. 07-14-2009 02:09 PM #2
    Ramsey
    Ramsey is offline Senior Member
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    Theyre known for intake warpage and gaskets ,I had one ,but i was throwing a code . check all connections.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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  3. 07-14-2009 05:48 PM #3
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    DamnYankee
    DamnYankee is offline Senior Member
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    Quote Originally Posted by tanz45 View Post
    No SES?

    Vacum leak, intake gaskets, intake cracked, fuel?
    0507 which I believe is a generic "high idle" or some such thing.
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  4. 07-14-2009 07:54 PM #4
    RedHeartbeat
    RedHeartbeat is offline WTH JUST HAPPENED?
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    Your pot stash catch on fire? That might be the cause of your "High Idle"

    what about 02s? Definitely have Virgil hook up to it and see what the sensors are putting to the PCM.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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