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Thread: Idles Great in Park, Not so much in gear!

  1. #1
    Tuner in Training
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    Sep 2008
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    Idles Great in Park, Not so much in gear!

    So I got the idle in park figured out but when its put in gear it surges and tries to push through the brakes.

    -PRC Stage 2.5 5.3L heads
    -Torquer 2 on a 112 (232/234 .593/.598)
    -FAST 92/92MM combo
    -Powerbond UDP
    -Ford Red "Skinny" 30lbers using Gregs injector info
    -OLSD

    Air/Fuel: A little lean like 15:1 at idle
    Timing: 18* and over/underspeed taken down
    IAC Counts: In Park hot 40, In Drive hot 150

    So is there a way to fix this issue without opening the tb blade anymore or drilling. If I open it anymore it would just keep lowering the Park settings to correct? It has a 3200 stall TCI unit. Not sure if that can mess with it. The throttle follower/cracker tables are stock. Still don't have a full understanding of those tables. Not sure what to do with them.
    Last edited by Scotty719; 07-20-2010 at 12:50 PM.

  2. #2
    Advanced Tuner 69lt1bird's Avatar
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    Oct 2007
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    983
    I don't see a converter in that list, is it stock?
    Free HP Tuners Beginners Tuning Guide

    LS1 Tuning Guide
    Michigan Snowmobiler

    1969 Firebird: 11.67@114 [email protected] 1/8 1.70 60 ft. EPS cam 234/246 .602.606 114+3, 6.0 LQ4, L92 heads milled 10.5:1, Ported L76 intake, ported 90mm Holley TB, 100mm MAF, FIC Custom injectors, Hooker LT, PYPES dual exhaust with an X pipe, 4L65e with all of the good parts inside, FTI 4000 RPM Stall, 12 bolt with 3.73 gears. HP Tuner tuned by me

  3. #3
    Tuner in Training
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    No, TCI 3200 unit about a year old.

  4. #4
    Tuner in Training
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    Bump for ANY advice! What about this. Idles fine til fans kick on and throw everything off and when they shut off it goes back to normal.

    Im thinking about starting over from scratch on this idle tune. What would be the best way to go about it? Get it to hot idle with an IAC count in the 40-60 range and set my RAF that way or Set the TPS voltage to .55-.57 and add to the factory RAF table? Now I can get this car to do well if I set the IAC RPM to 950 but once I turn commanded RPM off it just fluctuates. Don't understand it.
    Last edited by Scotty719; 07-24-2010 at 12:45 AM.

  5. #5
    Senior Tuner
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    Download post # 2 .cfg file. Upload it into your scanner software. Use instructions in post #6. Hope that helps your idle issues.

    http://www.hptuners.com/forum/showthread.php?t=30362
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  6. #6
    Tuner in Training
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    28
    First off your VE table looks kinda whack need alot of work on that shouldnt be that ruff at all. Second your idle timing needs to be higher more like 20-22 on both drive and park and blend it into you high and low octane tables. Third put you over underspeed tables back to stock they help alot. Fourth your idle airflow table looks whack to need some work on that should probly be around 9 but should do the russ k scan fix this. But that will get ya started if i had to guess i would put my money on needing to get your fueling lined out first.