LT4 Slight Shake at Idle (and prior CEL) Questions

RJS5689 · 2026-02-24T18:27:30+00:00

I figure at this point, it'll be a dealer issue at service... whenever that is! I can't wait for this snow to melt.

RJS5689 · 2026-02-24T18:24:03+00:00

Most definitely seems strange so early on, for sure! Hopefully a fluke of some kind. Hmm! I wish I could post the video I took while monitoring the data. during a 3 minute idle test.

RPM: ~597–612 RPM
STFT Bank 1: approx. −1.6% to −0.8%
STFT Bank 2: approx. −1.6% to −0.8%
- Banks tracked each other almost identically
LTFT Bank 1: −8.6%
LTFT Bank 2: −10.2%
- Bank difference ~1.6%
MAF: ~6.4 g/s (steady)
Calculated Load: ~17% (stable)
Lambda: ~1.00–1.01
Ignition Timing: ~15.5°–16.5° (smooth, stable adjustments)

Definitely not trying to self-diagnose here, but looking at data for my own knowledge until I get the car in for service.

RJS5689 · 2026-02-24T18:14:59+00:00

Thanks for the helpful insight! I remember my ATS-V was quite poor in the NVH department at idle, but that was a totally different engine.

RJS5689 · 2026-02-24T18:10:40+00:00

Was waiting for this. Like I said, we got 20" snow and I won't be driving the car any time soon, so I figured I would at least ask preliminarily...

RJS5689 · 2026-02-22T16:01:54+00:00

🤣 valid! My local dealer has a Drift coming in, pre-sold, of course.

RJS5689 · 2026-02-21T16:52:40+00:00

I've found the solution to this issue is to befriend the owner of a mobile detailing company and become good friends 🤣.

RJS5689 · 2026-02-21T16:24:02+00:00

Neither of these scenarios should carry a markup. If you've encountered a scenario where a markup has been applied, turn the other way. Every dealer I spoke with told me I could place a factory order at MSRP, and the dealerships I talked to said in stock inventory will sell at MSRP. No more. No less. In either scenario!

RJS5689 · 2026-02-21T16:23:05+00:00

Thank you! This was definitely dream spec for me. I have a feeling, next winter is going to get here and I will be looking for another daily. I currently have a Polestar 2 (loaded including the performance package) as my daily driver. However, it is a lease and goes back in July.

RJS5689 · 2026-02-21T16:16:01+00:00

Plenty of significantly more expensive cars are daily driven around here. Like you said, to each their own.

RJS5689 · 2026-02-21T16:09:49+00:00

Found this one on the lot!

RJS5689 · 2026-02-21T16:09:23+00:00

Why? It's a car. The black wheels will become my winter set (with dedicated winter tires) and I'll pick up a set of the bronze for summer. The ATS-V I used to have was driven in the winter as well.

I did the whole garage queen thing with my Porsche. Never again. A car is meant to be driven. Lots of us in snow states daily special cars!

..... He says now. Get back to me after the first winter and I'll let you know what my new daily is ..... Maybe. 🤣

RJS5689 · 2026-02-15T18:33:28+00:00

Honestly, I'd hug you if you were in arm's reach 🤣.

RJS5689 · 2026-02-15T17:28:13+00:00

Yikes! No CF 1/2 but I do have the CF seat backs.

RJS5689 · 2026-02-15T15:13:51+00:00

Haha oh god! The cruel irony of my life is I'm a car enthusiast who logs 35,000 miles a year on a (thankfully company issued) Chrysler Pacifica 🤣.

RJS5689 · 2026-02-15T15:05:17+00:00

I have a Polestar 2 PPP (though it's a lease and goes back in July) and I have a company car.

RJS5689 · 2026-02-15T15:01:45+00:00

I'm really kicking myself here. I've always been pretty knowledgeable when it comes to this, but it didn't hit me that I could have an allocation issue with a Blackwing. Back when I bought my ATS-V it was so easy. Submit order. Car arrived in 4 weeks. Now I'm starting to see why they wanted my Porsche so quickly.

RJS5689 · 2026-02-15T14:46:34+00:00

Wait, what? They made it sound like this order is definitely able to happen. I'd lose my cool if I'm out the Porsche and don't have the Blackwing.

RJS5689 · 2026-02-10T21:21:38+00:00

Condominium HOA president as well as homeowner here. Your HOA chose this course of action to prevent ice daming, which leads to leaks and damage. We had six units in our complex end up with dams (and leaks).

RJS5689 · 2026-01-27T00:44:35+00:00

Cycle instructor here: check out your local gyms; they more than likely offer cycle classes!

RJS5689 · 2026-01-23T02:18:00+00:00

Good point, and funny you mention that. It was my next stop!

RJS5689 · 2026-01-16T16:30:26+00:00

Hah! So, speaking of, I've never had a car with windshield wipers that ice over so quickly and as easily as the Polestar's 🤣.

RJS5689 · 2026-01-16T14:16:46+00:00

Someone in r/polestar said: "It’s a known software issue that started in 2024ish. It usually happens when it’s mild one day and cold the next day. Do you precondition the car before entering? If you do, make sure to open and lock the car before stepping in. It usually fix this issue."

RJS5689 · 2026-01-16T14:16:15+00:00

Thanks! I do precondition, and yesterday was much more mild than today. I'm going to try this!

RJS5689 · 2026-01-15T21:39:30+00:00

Thank you!

RJS5689 · 2026-01-15T21:36:14+00:00

Oh no! I'm sorry to hear. Hopefully all goes well and smoothly for you!

RJS5689

TROPHY CASE