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Thread: AC on and it idles at 3000+ WTH?

  1. #1
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    Default AC on and it idles at 3000+ WTH?

    I've played with the throtle follower tables and dont know what to do. When I turn the AC off it goes back to normal but it sometimes likes to idle at 2000rpms. I dont know what it is and I cant replicate the problem, it just happens out of the blue some times other times it runs like a champ!!!

    2000FRC 408ci 520rwhp - 498rwtq Callies Crank, Eagle Rods, Diamond Pistons, Absolute Speed Heads, 244 248 cam, LG Headers, FAST 90, TPIS 90, ATI UD, 11.6cr, EFILive, LC-1 Wideband, RPM Trans, DTE brace, Spec 3+, Momo, etc...
    Custom N2O direct port setup with stand alone fuel system in the works

    Idle and Revs

  2. #2
    Lifetime Member SSpdDmon's Avatar
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    Engine>Idle>Learning>Parameters and other tables

    After getting the desired airflow dialed in, you might need to expand the learning ability of the PCM or adjust the decay rates to combat your condition.

  3. #3
    EFILive Reseller ringram's Avatar
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    Tordne suggested turning learning off altogether which I did, no problems so far. There is also a table for adding extra air when the AC is on, you might want to reduce that.
    Get EFILive in europe (http://www.efilive.eu).
    2007 Escalade ESV L92 6.2L VVT.
    2014 VF SV LS3 Maloo.

  4. #4
    EFILive Crew Site Admin Tordne's Avatar
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    Can you explain the circumstance. For example:
    1) The idle hangs when coasting and will settle about a half second or so after coming to a complete halt.
    2) Sitting stationary and idling fine, I blip the throttle and it takes a long time or the idle to settle again.

    Cheers,
    Andrew
    EFILive Crew


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    Quote Originally Posted by Tordne
    Can you explain the circumstance. For example:
    1) The idle hangs when coasting and will settle about a half second or so after coming to a complete halt.
    2) Sitting stationary and idling fine, I blip the throttle and it takes a long time or the idle to settle again.

    Cheers,
    These are more of less the conditions when the AC is off, some times its reved up to 2000rpms and at complete halt stops after 2 or 3 seconds. Not always though.

    But with the AC it just stays up in the rpms, if I blip the throutle comes down to 1000 for a sec but then it shoots up to 3000 again.
    2000FRC 408ci 520rwhp - 498rwtq Callies Crank, Eagle Rods, Diamond Pistons, Absolute Speed Heads, 244 248 cam, LG Headers, FAST 90, TPIS 90, ATI UD, 11.6cr, EFILive, LC-1 Wideband, RPM Trans, DTE brace, Spec 3+, Momo, etc...
    Custom N2O direct port setup with stand alone fuel system in the works

    Idle and Revs

  6. #6
    EFILive Crew Site Admin Tordne's Avatar
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    Quote Originally Posted by Darkness
    These are more of less the conditions when the AC is off, some times its reved up to 2000rpms and at complete halt stops after 2 or 3 seconds. Not always though.

    But with the AC it just stays up in the rpms, if I blip the throutle comes down to 1000 for a sec but then it shoots up to 3000 again.
    Send me your file if you don't mind. email is andrew and holdencrazy dot com
    Andrew
    EFILive Crew


  7. #7
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    Quote Originally Posted by Tordne
    Send me your file if you don't mind. email is andrew and holdencrazy dot com
    Sure thing thanks.
    2000FRC 408ci 520rwhp - 498rwtq Callies Crank, Eagle Rods, Diamond Pistons, Absolute Speed Heads, 244 248 cam, LG Headers, FAST 90, TPIS 90, ATI UD, 11.6cr, EFILive, LC-1 Wideband, RPM Trans, DTE brace, Spec 3+, Momo, etc...
    Custom N2O direct port setup with stand alone fuel system in the works

    Idle and Revs

  8. #8
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    I might be chasing something in the tune that might be hardware related. I noticed today that I have these 2 trouble codes.
    P1518 "Throttle Actuator Control (TAC) Module Serial Data Circuit"
    P0108 "Manifold Absolute Pressure (MAP) Sensor Circuit High"

    Could this be the cause of my car wanting to idle at such high rpms? I mean its getting worse and worse, yesterday I couldnt drive it at all as it would rev it self to 4500rpms in neutral while cruising and it would keep the car at 80mph without me hitting the throtle! And at full stop it idles like a dream at 950.

    Oh I logged the Absolute throttle and it shows it at 11% when its reved like that and when its not reved its only at about 7%
    2000FRC 408ci 520rwhp - 498rwtq Callies Crank, Eagle Rods, Diamond Pistons, Absolute Speed Heads, 244 248 cam, LG Headers, FAST 90, TPIS 90, ATI UD, 11.6cr, EFILive, LC-1 Wideband, RPM Trans, DTE brace, Spec 3+, Momo, etc...
    Custom N2O direct port setup with stand alone fuel system in the works

    Idle and Revs

  9. #9
    Senior Member Chuck L.'s Avatar
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    Question Didn't I see...

    A Thread on another site, about problems with the FAST 90???
    "2000FRC 408ci 520rwhp Callies crank, Eagle rods, Diamond pistons, Absolute Speed heads, 244 248 cam, LG Headers, FAST 90/90, 11.6cr, EFILive"
    Chuck L.
    CODY Motorsports
    Fuel Injector Service
    Madison, GA.
    706-342-3152
    770-265-5144 [C]

  10. #10
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    Whats your point?
    2000FRC 408ci 520rwhp - 498rwtq Callies Crank, Eagle Rods, Diamond Pistons, Absolute Speed Heads, 244 248 cam, LG Headers, FAST 90, TPIS 90, ATI UD, 11.6cr, EFILive, LC-1 Wideband, RPM Trans, DTE brace, Spec 3+, Momo, etc...
    Custom N2O direct port setup with stand alone fuel system in the works

    Idle and Revs

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