i just rebuilt my iron duke.....turns out that i had a siezed intake valve on #4....
it was prolly caused by overheating, since the oil smelled BAD, and the thermostat housing was warped. it never used to idle, so i took out the IAC and it was siezed, so i got a new one of those too....
now it idles liek a charm, but i hooked the scan tool up to it to check everything...
i noticed that the IAC count was at 000, so i thought i had a vacumn leak(may of caused overheat), but i had NO vacumn leak anywhere(replaced hoses for security) this engine also pulls 22inches/mg at 950RPM, which i've been told is very good for a 4 cylinder...
but they also told me the IAC count should be closer to 100 than to 000
do i just have to recalibrate it or something?