Originally Posted by
steveo
i think i said that before.. just closed enough where they dont stick in the bores.
if you were playing with the throttle screw with it running, that explains it, but makes the log a bit invalid.
fyi you never use that screw to set idle speed on a fuel injected car. it is computer controlled with the iac. set it and leave it, and tune idle in your bin. spcifically on an lt1, you set it nice and low to achieve a healthy range of iac operation and get as much air through the iac as possible (and not past the throttle plates)
you need to at least turn the key off and on again after playing with that screw (i actually reset the ecm at this point), so it can re-learn what 0% tps is; it remembers the lowest value it's ever seen as '0%=closed', and you changed that mid-log, so the ecm just assumed you were holding the pedal down a bit, and stopped trying to achieve the idle target.
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