Running rich? Maybe IAC?

[Why Try]

AF is around 9.9-10.2@ WOT. Car has been 11.5-11.8 for 3 years prior. Car runs fine but WOT is the only time it seems to be off. Getting idle air control code. Has anyone had a bad IAC effect WOT A/F? Is that possible?


Stuff I have tried:
New Plugs had IT24 nowe TR6
New FRPS
Replaced FPDM
Checked for vac leaks

Mods that may effect it:
2.8H
boost a pump
PPRV delete

 

[cj428mach]

The iac isn't the reason you're running rich. I don't know what iac code you have but if you had a big vacuum leak it could be the iac maxed out maybe causing the code trying to compensate for the leak.

 

[bigmoose]

Have you tried cleaning your MAF?

 

[Why Try]

Yes I have cleaned the MAF and I have a IAC ordered. I don't think the IAC will fix the A/F. I'm hoping.