Hey folks,

I posted these error codes on a different page on this forum. I received one good answer, and they was the only response unfortunately. I was hoping for some more insight, and not wanting to go surf the internet looking. I guess I am lazy that way.

Also looking for a tutorial video on changing the plugs, and the coil packs on the G37, but the search engine on this site is a little wonky to me.

Thanks in advance
David

 

Have you made any progress on ILM-NC G37S excellent suggestions?

 

It will take less time to actually:
1) pull and check the plug;
2) swap the coil pack over (to see if the code follows);
3) check for loose/corroded/burnt wiring; and
4) check for oil seepage around the plugs/coils-

than you will spend googling for videos. Here is a video that I found about cleaning the throttle bodies and changing plugs (plugs at ≈5min. mark). Not the greatest but it's something.

I'm not trying to beat you up or be a d**k about it, but your issue(s) will require you to get your hands dirty.

 

Okay, finally got time to work on the Infinity. Thank you again for the link to the manual.

I opted to go full tune up. I replaced all coil packs and all sparkplugs. The plugs at all the local parts stores were between $18-$21 each, so opted to find them online. Took a while to get them here to Texas, but OE plugs at $6.50 each was worth the wait. The boxes said Nissan but the plugs were the Denso's that came out of the engine. I also purchased an $11 sparkplug swivel socket with permanent extension, which worked perfectly and it eased my armatures mechanics mind. Upon disassembly, I discovered that the drivers side snorkel, in front of the air cleaner, is missing. Will need to source one of those. Also discovered on the same side intake tube, what ever that small rectangular off shoot is, is broken at the clamp. Maybe I should just install an air intake system instead of fixing these items? I cleaned the throttle bodies with a toothbrush and cleaner just like the videos showed. Cleaned the air flow sensors. One of them is missing one of the mounting screws. All cable clamps were loose I noticed. Don't know if that was because there was a repair before I owned her, or they worked loose over time, but I for sure will put those on my check list from now on. I noticed there were procedures for resetting idle in the manual, and followed that procedure though it didn't seem to need it. Sounds good but does sound a little different. Runs good. Don't know in the end if it was the plug or coil but no biggie. All the other codes are gone as I had the battery was disconnected. Glad I got my hands dirty.

Thanks

 

Sounds like you have made great progress!
You might want to check on your plugs in 15 - 20,000 miles. For $6.50 each they are not iridium plugs and the cheap plugs wear quickly, resulting in misfires.