I'm currently having a weird issue where the car occasionally surges, doesn't idle, and the fuel trims are all out of whack. I've dealt with a similar issue before when I first got the car and it was just caused by swapped fuel injector connectors. The issue now seems much more complex. Just looking at the logs, it almost seems like my o2 sensor is busted, but I'm also thinking I have a fuel injector issue. I haven't tried cleaning the MAF or ESS, although they did look pretty clean and free from oil but I'll clean them here soon. I have bhr coils and wires, relatively new plugs, all with less than 10k miles on them. I tested compression about a year ago and while it was low at about 82 psi even, the car has been running fine since I got it and only recently has it had this bad of issue.

I'll provide more info if needed, but otherwise, thanks for any help provided.

 

What intake do you have?

 

Currently have an AEM intake.

 

I can't make sense of the logs you posted. I don't have VersaTune and the PIDs and data in them don't really make sense together, so I can't tell what's what.

When you say the fuel trims are out whack, what are they?
Are the spark plugs and wires all correctly connected? Are any coils arcing on the outside?

 

I'm not too well-versed in using exported logs from versatuner, so unfortunately I can't really help there.

But for your other questions, I did confirm that spark plugs, coils and wires are all firmly connected in place, and are clean. No arcing coming from the coils either.
As for the fuel trims, It's specifically the primary sensor short term fuel trim that is at a near constant 0 percent, even while I step on the gas. Under WOT it also seems to hit high negative fuel trim. (-10 to -25%).

It also surged when idling before giving me the P2109 Code, and when surging fuel trim would be zero, and fueling status would be constantly switching from closed loop (with fault) to open loop.

Sorry if it this seems a bit confusing, but thanks nonetheless for any help.

 

0 fuel trim is fine, but dropping to -25% means it's seeing too much fuel. Erratic behavior would be consistent with a dying O2 sensor, though you would also get a code pretty quickly.

2109 can be a problem with the throttle but it could also be loose battery cables/poor grounds causing unstable voltage across the whole electrical system

 

I recently had to disconnect the battery while replacing my oil cooler lines. i replaced them with a much more sturdy terminal clamp, and applied the included gel protectant on the terminals, and secured it all properly, then proceeded to check voltage on battery cables to confirm it was ~14v while running. I've also looked at most of the grounding points and they all seem clean and firmly in place.

I'll check it all again but I have done these visual checks a couple times in frustration. Thanks for the help so far.