idle adjustment screw- Lt1
Thread Starter
Racer
Joined: Jul 2004
Posts: 279
Likes: 0
From: Jonesboro AR
idle adjustment screw- Lt1
got new cam installed and the custom chip didnt raise my idle. my mechanic turned the screw on the throttle body and raised the idle to about 700 or so. it was around 500 and almost died when put into gear.
is it ok to adjust this or is it supposed to be left alone?
is it ok to adjust this or is it supposed to be left alone?
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
That method will work in a basic way but the proper method is to program the chip so that the ECM maintains a higher idle.
That way the ECM can compensate for changing loads and conditions.
I would go with what you mechanic did unless issues arise from changing temp or loads, i.e. if it ain't broke, don't fix it.
That way the ECM can compensate for changing loads and conditions.
I would go with what you mechanic did unless issues arise from changing temp or loads, i.e. if it ain't broke, don't fix it.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Other than reprogramming, there is no way to raise the idle speed of any fuel injected engine. The screw, for an LT1, is an air bleed. It should be left alone. Find a mechanic who knows fuel injection so that it can be turned back to where it belongs and then buy a two way scanner or find someone that can reflash the PCM so that it idles with the cam you've installed.
