mooseG37

I recently filled up my 2013 G37 sedan with 93 (car was on On position with engine off), and when it was filled and I try to start it, it would only go up to around 500rpms, and then engine would die off after 2 seconds.

It did this 3 times, before I turned everything off for about 10 seconds and then it started fine this time without any issues besides the CEL light. Problem hasn't occurred again, but I did notice the idle RPM seems to be a bit high.

Here are the codes I got from AutoZone:
P1233 - Suction control valve 1
C1109 - Battery voltage [abnormal]
C1131 - Engine signal 2
U1000 - Controller area network line malfunction


Any ideas where I should start first? thanks!

Gillan

93 seems a bit too high if you ask me. I'm not sure what's going on with the CEL codes coming on, but try filling up on 91 next time and see if anything changes.

Said Amir

P1233 Permanent Code - Nissan 370Z Forum

mooseG37

I think we only have 87 or 93 here in Michigan, and I've never had any issues regarding that. I also have GTR injectors and usually fill up with E85 (car is tuned), and this happened on my second 93 fill up after using E85 all summer long.

stealthee

Putting 93 in it isn't going to cause an issue. Most areas only have 87/89/93. It calls for 91 minimum. I don't think you really understand what octane is.

Said Amir

Double-check to make sure the car is on the correct map? Might be dumping a lot of fuel and the throttle bodies are trying to accommodate for that by raising the RPM.

mooseG37

I've checked that I was using the correct map for 93 when the car wasn't starting and it was the right one.

Said Amir

I do not know what you are tuned on. But maybe try clearing the codes and do a ECU reset with the Ecutek Bluetooth dongle if you have one. Or even re upload the final tune on the car once more.

mooseG37

Tuned on ecutek so I was able to get a hold of a dongle, reset the codes, and the idle seemed to go back to normal and did an idle relearn just in case.

I‘ll see if the codes come back but should be good for now, thanks!

Noogie Lamont

Glad to hear it was a tune issue.

Personally I have used a mixture of 100LL and ethanol free 93 (90/10 mixture) and still did not have an issue with the G starting or performing.