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how to reduce high idle?

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Old Sep 15, 2006 | 01:21 PM
  #1  
Ronny's Avatar
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From: wisconsin
how to reduce high idle?

been using Tunerpro now for a month with EBL.
moved my values from old bin to ebl.bin as best i could.

i find my car now idles smoothly at 1000-1100 rpms. open loop @ idle. manual trans. i show in whats up 0-1% TPS. idle stop screw barely touching if at all per last attempt to reduce idle. IAC is zero steps. i scored the 1995 7.4L TB off EBay two years ago and was/is new. used a GM base gasket for that model year so i will assume no vac leaks at TB. on WB the A/F shows 14.3/1. commanded to 14.3 at OL AFR in OL A/F CTS VAC. idles at 16 deg timing. i disconnected the charcoal canister at PCV and plugged PCV. only thing i have not checked is whether my stock throttle cable disallows the butterfly to close 100%. used an adjustable Edelbrock throttle bracket on Holley projection. i think the 0-1% TPS is in whats up is reading where it is at end of travel rather than its actual capacity. IOW that 0 is learned.

what else can cause a high idle?
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Old Sep 15, 2006 | 01:35 PM
  #2  
Dominic Sorresso's Avatar
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From: Bartlett, IL
Car: 92 ZR-1
Engine: LT-5
Transmission: ZF-6
Axle/Gears: SuperDana 44 4.10
Ron,

Have you tried covering TB opening with your hands? See if it continues to run. If it does, there's a leak somewhere. I would also plug the canister hose.
My canister is unplugged that way waiting for RBob to come up with CCP control for N.O. CCP solenoid.
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Old Sep 15, 2006 | 01:55 PM
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will do. sunday after the GAME will install the IAT sensor and give it a try.
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Old Sep 15, 2006 | 02:02 PM
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From: Bartlett, IL
Car: 92 ZR-1
Engine: LT-5
Transmission: ZF-6
Axle/Gears: SuperDana 44 4.10
Originally Posted by Ronny
will do. sunday after the GAME will install the IAT sensor and give it a try.

Oh Yeah. The Packers. Didn't they recently lose to the Bears?
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Old Sep 15, 2006 | 02:50 PM
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Bears? oh yea the team that CHOKED in the playoffs.
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Old Sep 15, 2006 | 02:52 PM
  #6  
Dominic Sorresso's Avatar
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From: Bartlett, IL
Car: 92 ZR-1
Engine: LT-5
Transmission: ZF-6
Axle/Gears: SuperDana 44 4.10
Originally Posted by Ronny
Bears? oh yea the team that CHOKED in the playoffs.


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