When it pulled in idle was at 900-1000 rpm range. First thing I did was check for codes and found:

32 EGR
36 Burn Off Diagnostics

Then checked the stream..., closed loop, coolant temp at 192 and rpm 1025.

Checked for vacuum leaks with my water bottle spray and feel confident it does not have vacuum leaks. TPS at .54 volts

Then removed the IAC (came out hard) ..it was very dirty, pintle carboned up..cleaned it along with the very dirty throttle body plates/passage. Reset the IAC, installed it, did the A-B connector jump, allowed it to reset, removed IAC plug and A-B jumper and started it.

Adjusted idle to 450 in nuetral..and ran great..YES!!! then shut engine off plugged in IAC and restarted engine. Shortly thereafter it adjusted itself back up to 600-700 RPM range. Runs good, but idle is too fast again, no codes yet.

Sould I consider a faulty IAC?