idle adjustment

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Apr 2, 2008 | 03:59 PM

shorty popz

Thread Starter

Junior Member

Joined: Jan 2008

Posts: 3

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Car: 91 Z28

Engine: 5.7 TPI

idle adjustment

i've done the search, and i'm still having a hard time figuring out how to adjust my idle.
its a tpi
any help is greatly appreciated

Apr 2, 2008 | 04:23 PM

theimpaler68

Senior Member

iTrader: (1)

Joined: Apr 2007

Posts: 668

Likes: 4

From: Palm Coast, FL

Car: 86 T/A & 88 GTA

Engine: 305 LB9 TPI & 350 LO5 TPI

Transmission: Jasper 4L60 x2

Axle/Gears: 2.77/posi LSD & 2.73/posi LSD

Re: idle adjustment

there is a little screw on the throttle bracket. when the cable and spring come back to rest they hit it. right there on the throttle body. i know that is one adjustment.

Apr 2, 2008 | 04:38 PM

CRUSHER

Junior Member

Joined: Apr 2002

Posts: 99

Likes: 0

From: Toronto

Car: 88 Iroc

Engine: 350(300hp G.M crate, supercharged)

Transmission: 700R4

Re: idle adjustment

This may help

https://www.thirdgen.org/tpimod2

Apr 2, 2008 | 05:43 PM

Iceman89

Junior Member

Joined: Jan 2008

Posts: 5

Likes: 0

Re: idle adjustment

Take in mind that adjusting the idle screw, will change the tps sensor voltage... Should be somewhere around .54 - .61 VDC This will also change the IAC Valve, after adjusting drive the car above 40mph to reset the Idle Air Control Vallve. Hope this helps,,, Good luck!