status update: Reran the KOEO/KOER code today, and came up with the following codes:

411 - Cannot check RPM low during KOER test
412 - Cannot check RPM high during KOER test
332 - EGR valve opening not detected (We knew the egr valve was bad)

than another code, 538 - Insufficient RPM change during KOER dynamic response test/ Operator error (This one is because my dad pushed in on the gas by accident during the test, I believe (he didnt do it for the other codes, he did it afterwards trying to do the cylinder balance test and did it wrong so it threw the 538 code))

Anyone know what code 411 and 412 are for? Could it simply be because of the egr valve being bad?

The TPS is showing correct voltage btw, tested that today.

 

Well, I think I figured out the problem. The IAC I got didn't have any instructions with it, and we thought it was defective so we took it back and replaced it with another of the same brand. This one had instructions and it says it needs to go on reverse direction the original goes on, and I put it on the way the original one did. It doesn't go back on the other way, because the oil spout is in the way, so I took it back and am ordering the replacement ford part that will be in tomorrow.

Going to put it on and hope it helps.

I still cannot for the love of me find where the pcv valve is. I was under the car, and laying on the motor looking by the firewall and could not find it. I found some lines that go behind and under the intake plenum, but I can't get my hand in there to find out if that's it or not.

How long does it take to replace? Pull the old one out, put the new one in? (After replacing the screen and grommet of course)