I put a brand new IAC in today and when I fired up the car the IAC counts were 0!!!

When I got on it down the road they rose to about 63, but this is nothing compared to what they should be. However the car pulled just as strong she did before and I got 0 KR all the way through 2nd gear. Does the PCM need the relearn the new IAC? I'm letting the PCM reset itself for a longer period of time as I type this so maybe that will help, otherwise I wonder if its the incorrect IAC. I doubt that though because I checked the P/N with multiple sources and they all matched up. Any other prep I'm supposed to do to the IAC? I just took the spring compressor off that was holding the spring compressed and in place, I don't need to do anything else do I?

The IAC valve may be damaged if installed with the cone (pintle) extended more than 28 mm (1-1/8 in). Measure the distance that the valve is extended before installing a new valve. The distance from the idle air control valve motor housing to the end of the idle air control valve pintle should be less than 28 mm (1-1/8 in). Manually compress the pintle until the extension is less than 28 mm (1-1/8 in).

Cheers,

Interesting Foghorn, but the pintle on this new IAC is compressed more than the original. In other words, the extended distance between the housing and the pintle is visually less on the new one.

Wait nevermind. After letting the PCM reset for 2 hours and reconnecting the battery it seems to be getting much better numbers: 49-51 counts at idle. So all along I just needed to unhook the battery for longer than 15 minutes.