IAC too high?

[timothydog]

I was tuning up with the OTC scanner yesterday.

I noticed my IAC was about 60-70 at idle in park. I read somewhere that IAC should be somewhere between 10-20. So I started tweaking the idle screw after the car reached closed loop mode. But this did nothing for the IAC #'s. I eventually set it back to the way it was and reset the TPS.

Am I getting these high IAC's because I'm running a z93 chip with a higher idle RPM? or is there another way I should go about this? or does it matter?

Thanks
Tim

 

[TurboDave]

Unless you put the OTC in "road mode", it comes up in ALCL mode, and defaults to and idle rpm at about 1,000-1,200 if memory serves. This would cause the IAC numbers you're seeing.