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  1. #1
    Junior Member
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    idle issues... idle high. unplugged tps runs good?

    2000 ta, headers, cam, ls6 intake, slp lid and tune... other than that stock.

    Have been searching for vacuum leak because of high idle. seems to idle around 1100-1200. was searching for vacuum leake and tried unhooking iac and tps. thought it was weird after unpluggin the tps it idles great. drive it around town and runs good as well.

    Does this mean tps is bad im assuming? shouldnt it run bad with tps unplugged?

    thanks for any suggestions

  2. #2
    Spaz is My Mentor SMWS6TA's Avatar
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    Feb 2009
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    11,758

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    idle issues... idle high. unplugged tps runs good?

    try a reset.


    car off, turn key to on position no start. turn off.

    repeat but open the throttle blade to max open. close then turn off.

    start car. see if you have improvement.

    if no change, if you can borrow a tps from a fellow f body and swap out see if it fixes it. fixed get new tps. no change may need to check wire harness
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403ci , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, Full UMI Performance Suspension, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/Wavetrac Diff 3.73 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert - Stock

    78 FB - Just getting started......

    Horsepower never lies, but is often lied about!

  3. #3
    Veteran pajeff02's Avatar
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    Mansfield, PA
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    22,146

    Black & Blue
    '02 WS.6 / '07 Suburban

    While you are at it - carefully cleaning the throttle body isn't a bad idea either. Use throttle body cleaner, lint free cloth, and Q-tips for the tight areas.

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