MyG37 - G37 Sedan

Jolts while idle (2009 G37X sedan)

AV37 — Mon, 11 May 2026 11:59:41 GMT

Hey guys. Recently I�ve been having issues trying to diagnose what feels like random jolting while sitting at a stop light in drive and also in park. Rpms fluctuate ever so slightly when this happens. For context g37 sedan recently got a new engine put In. I believed it was low on transmission fluid before this so I added some and did the whole procedure of letting it get to operating temp and draining any excess hoping that would solve my issue. After doing so I�m still having these issues. I also get the occasional rough shift or stutter when driving. Transmission has about 180k miles. New engine is at about 120k. New engine and transmission mounts were installed when the engine was put in. Also did gallery gaskets. Spark plugs. Water pump. Thermostat. Serpentine belt. What could this be? Has anyone else experienced something similar?

Injen Cold Air Intake Question

J37 — Fri, 08 May 2026 22:36:23 GMT

I just bought injen long tube cold air intakes, open box, never used for dirt cheap, but im in a bit of a dilemma. Upgarage advertised it to fit a G37 but I looked it up and I have the SP1989P which is listed as a direct fit for 370, and they have a separate part and part number, SP1997P, for the G37 intake. My question is will my current one, sp1989p, fit my G37 sedan, and still come with the stuff I need to install it. I included pictures of the two

Are these intakes even good? Im reading stuff online about hydrolocking and dirt being sucked up.

Water leak (not sunroof)

AV37 — Thu, 30 Apr 2026 06:46:00 GMT

Have been dealing with a water leak getting in through the passenger footwell. When I run car through the car wash or something I see it dripping from behind the glovebox. I�ve already re routed the sunroof drains and made them exit through the ac drain location. I�ve heard some things about a common cowl leak. Could this be it? Is there something else it could be? And if so, how can I fix it? My car smells horrible and I don�t want my back to get damaged

A Question I have been meaning to ask for the last 9 years - The Rotary Dial

kuhnto — Wed, 29 Apr 2026 14:06:55 GMT

I have had this 2012 g37 for 9 years, and am finally posting to ask a simple question. Is there a way, from the steering wheel controls, to emulate the rotary dial Left and Right? It would seem intuitive to be able to move the selection left or right (Play/Pause) from the steering wheel.

LED dash

AV37 — Tue, 28 Apr 2026 08:03:40 GMT

Hello guys, recently The LEDs in the dash of my 2009 g37x sedan have gone out. The ones that show the milage and stuff. It�s just solid red now. I�m curious is there a replacement screen that can be connected and have it be to the side? I know replacing the LEDs would be kind of tedious so wanted to see if there was a workaround? Is there an easier way to see my milage and information that pops up?

P1148, p1168, p0051, p0031

Jbsnn — Mon, 27 Apr 2026 07:12:32 GMT

So I have a 2009 journey g37 sedan that had an engine replacement and the car came back with these codes (P1148, P1168, P0051, P0031) and the CEL on. The car ran good and I had no issues until I hit a possum on the drivers side bumper area going around 50mph, that�s when I started noticing issues with the car. It would randomly shake when in idle and when driving with the throttle in the same position the car would kinda stutter, I also noticed a piece of plastic hanging down on the drivers side near the wheel. Now recently the drivers side headlight is out/dim. I�ve checked all fuses especially the ones for the o2 sensors and I�ve replaced both maf sensors and checked for loose or broken wires. I don�t want to spend the money replacing the o2 sensors if that�s not the real issue, can any one help?

I�ve attached the report on my car after using the scanner.

Attached Files

Report_110_S639128587631674212.pdf (503.9 KB)

Bad rear end or feels swaying or loose idk

Jchag28 — Sat, 25 Apr 2026 18:59:01 GMT

Just installed bc coilovers front upper adjustable godspeed control arms rear camber arms adjustable godspeed and the z1 front and rear performance awd sway bars, had a new alignment and tires cars feels amazing at higher speeds my rear end is really loose id say or swaying or body rolling rear bad around bends and bumps at highway speeds , everything is tight and rear sway bars end links felt fine as well , what could this be ? And my alignment wasnt perfectly but it was very close also they said my camber adjusting bolts were seized any idea ?

Nissan Skyline is making a come back

G10 — Thu, 16 Apr 2026 01:14:12 GMT

Nissan has officially confirmed that the Skyline is making a comeback as part of its push to revive iconic models. The new version is expected to blend classic design elements�like the signature round taillights�with modern performance and technology. It will likely return as a driver-focused sedan rather than a full GT-R replacement. Early details suggest a possible twin-turbo V6 and a strong emphasis on performance and heritage. Overall, the comeback shows Nissan is trying to reconnect with its roots while modernizing the Skyline for a new generation.

370z into g37 questions

1013dirtywhitbo — Wed, 01 Apr 2026 12:16:51 GMT

Hello I�m new here,
had someone helping with the motor swap. While I was at work they did the harness and when I got home there were the two timing wires on front of motor not connected and he says not enough wires to connect. I have done nothing else and told him to get lost. Should I start over on harness or is this common? Thank you

Nissan Skyline Nismo S-tune decals on INFINITI G37XS sedan

thelastskyline — Mon, 30 Mar 2026 14:32:07 GMT

I always loved the way the r32 , Sentra SE-R and , R33 looked like with the S-tune decals.

probably going to do roof wrap next what do you guys think?

G37 sedan axle back

Growen55 — Sun, 29 Mar 2026 21:31:58 GMT

I'm looking for a good affordable axle back. I'm hoping to find one for $200-$300. Any help would be great thanks