I figured this out. This post can be deleted or shown as an example to always DOUBLE CHECK.


I finally got my firebird going, took it for a test drive a couple days ago. Well, the fan didn't turn on, it's almost 90 outside, and the car started to overheat, so I stopped and waited for it to cool down. It threw a code, but didn't have anyway to check it at the time.

I fixed the fan (using a toggle switch). Runs better. No more heating problems.

Yesterday, I took it for another good cruise, another code came up, this time I had a trusty paperclip on me.

Code 32 and 42.

Which one would the overheating have caused? EGR (32) or EST/ICM(42)?

 

Nevermind the code 42. I checked the timing a bit ago and forgot to reset the ECM.

EGR is dead/bad vacuum. I will have to get on that and fix it.