I'm feeling kind of stupid cause I can't find this thing! I was told in another post to look on the driver's side inner fender.

This is for a 1991 4.9L...

I found a few that might be it, but they're all connected to stuff. One is a grey 3 prong terminal with just 2 wires in it, but it didn't work.

Any help?

It probably also doesn't help that my check engine light doesn't come on for a couple of minutes which makes me think the light is something exhaust related.... O2 sensor or EGR perhaps.

 

'88's is mounted behind the air filter box.





Adrianspeeder

 

Thanks this one is completely different than i'm used to. got about 3 codes pulled, besides the 1-1-1, i think it was 13 32 and 33

 

There's a partial code list in this thread, but there's a link to the full list.