03 r53
p2000
P2303
And a p0130, which could possibly be due to my free flowing miltek header?

As for the p2000 and p2303, I have seen people say it could be a bad PCM. Or bad coil(s). How would I go about diagnosing it?

 

First thing I would do is pull the wires from the coil and clean the contacts on the coil itself.
If that doesn't do anything, try swapping the wire positions to see if the code moves (this will indicate possible bad wire)
​​​​​​if that doesn't change anything, you may be looking at a bad coil.

 

Hey @BlwnAway just curious -
I read somewhere that one can determine a bad coilpack on a gen 1 by turning it upsidedown. If the color is white - "supposedly" it is an indication of a bad or near dead coilpack.
Have you ever heard of this??
Thanks.

 

Hmm, new one on me.
But I've never really looked.

 

Yeah, me too.
I pulled my coilpack this afternoon while I was detailing my engine. I turned it over to see the underside poured resin "ballast"/"insulation" is naturally glossy white.
I now think I remember that the poster showed that the bottom of his (bad) coilpack was caulky and dusty white - resembling the corrosion you would see around battery terminals.
His example definitely was convincing to me that his coilpack was indeed suspect of going bad/dead.

Just thought I'd ask

 

I don’t see any P030* error codes for misfire? I would think to see some of those too with coil issues.