Turbos cut out occasionally when boosting in cold weather.

[VelixGV]

Like the title says, my turbos will cut out sometimes when boosting in frigid weather.
There's no engine warning light, the car will just stop producing boost until turned off and on again.
This doesn't seem to happen every time, but when the temps are below about 5 F it will happen.

- Yes I wait until the engine is fully warmed up.

Does anyone have any ideas?

 

[Snicklefritz]

5F, lol. I'd be babying my baby at those temps. "Full warmed up", defined as what? To me the engine isn't fully warmed up until the oil temp is at or near 200F. That can take a good while, and a good while more when it gets colder.

 

[VelixGV]

5F, lol. I'd be babying my baby at those temps. "Full warmed up", defined as what? To me the engine isn't fully warmed up until the oil temp is at or near 200F. That can take a good while, and a good while more when it gets colder.

The oil was at 200F +/- maybe 10 degrees tops. I was using the digital oil gauge to determine the temps.

 

[Dildoor]

Went through -32 over the weekend. No turbo issues. Started rough as heck though.

 

[AWDGT2]

Are you running an Ethanol? And could you define "cut out"? Does the car go limp or fall on it's face?

 

[VelixGV]

Are you running an Ethanol? And could you define "cut out"? Does the car go limp or fall on it's face?

My car is stock, I run on 92 octane. By cut out, I mean it boosts to about 12-14psi just fine, then when I let off it cuts the boost. After that, the engine won't produce more than 1psi even when flooring it.

Turning the car on and off fixes it and it produces boost again.

 

[bfglitch]

What model year?

 

[VelixGV]

What model year?

2022 GT2

 

[Dildoor]

Sounds like a limit switch that gets reset by power cycle. But on a stock car what are the odds of it overboosting? You should take it in for service.

 

[VelixGV]

Sounds like a limit switch that gets reset by power cycle. But on a stock car what are the odds of it overboosting? You should take it in for service.

From what I understand, the cold air can cause overboosting because it is more dense.

 

[Dildoor]

I'm not sure if hitting the overboost limit is within spec for 5F operation. I've never encountered it, personally, even in much lower temperatures.

 

[VelixGV]

I'm not sure if hitting the overboost limit is within spec for 5F operation. I've never encountered it, personally, even in much lower temperatures.

Yeah, it doesn't happen very often for me either. I can build boost just fine most of the time. Maybe it's my K&N air filters. Because that's the only non-stock part of the engine and they are supposed to allow extra airflow.

 

[Dildoor]

If you can replicate it reliably should be an easy enough test between the K&N and OEM filter. I would be surprised if that was the culprit though. I have the same filters. Maybe something is letting air in past the filter?

There's this post, but they seem to get CEL + codes. Plus they have bolt ons.

P0234

Hello im new here got my stinger last april I got install ark mid pipe and full exhaust ingen for intake Car run perfectly but today i was following an slower car then pass it arround 80 engine light show up Run the code and p0234 overboost The temperature it is here -30 c Any suggestions thanks

stingerforum.org

 

[VelixGV]

If you can replicate it reliably should be an easy enough test between the K&N and OEM filter. I would be surprised if that was the culprit though. I have the same filters. Maybe something is letting air in past the filter?

There's this post, but they seem to get CEL + codes. Plus they have bolt ons.

P0234

Hello im new here got my stinger last april I got install ark mid pipe and full exhaust ingen for intake Car run perfectly but today i was following an slower car then pass it arround 80 engine light show up Run the code and p0234 overboost The temperature it is here -30 c Any suggestions thanks

stingerforum.org

Well, I think if it happens again I will record the lack of boost building and schedule a service.

The current lack of codes/warning lights and the fact it works after a restart makes me not too worried.

In the fall I tested my 0-60 times and they are as advertised.

 

[bfglitch]

2022 GT2

Had a feeling. Also have a 2022. The facelift models seem to have overboost issues in cold weather (For me it seems to start in the 40's F). I've noticed it happens to me whether or not the car is fully warmed up. Usually it seems to happen between shifts of 2nd to 3rd while the car is at full boost. If you watch the gauges, you'll notice during the shift the boost suddenly spikes high and right after the car basically shuts down all boost until you turn it off and back on. If it happens again after restarting, it'll trigger a CEL (P0234) and will stay there until after a couple of drive cycles without overboosting. As far as I know, there is no fix from Kia for this and the only way you can fix it yourself is to get a tune. Problem is, taking it to Kia, they'll wind up saying they can't replicate / cause the car to go into the overboost condition, most likely because they aren't pushing it hard enough to do it while testing.

 

[VelixGV]

Had a feeling. Also have a 2022. The facelift models seem to have overboost issues in cold weather (For me it seems to start in the 40's F). I've noticed it happens to me whether or not the car is fully warmed up. Usually it seems to happen between shifts of 2nd to 3rd while the car is at full boost. If you watch the gauges, you'll notice during the shift the boost suddenly spikes high and right after the car basically shuts down all boost until you turn it off and back on. If it happens again after restarting, it'll trigger a CEL (P0234) and will stay there until after a couple of drive cycles without overboosting. As far as I know, there is no fix from Kia for this and the only way you can fix it yourself is to get a tune. Problem is, taking it to Kia, they'll wind up saying they can't replicate / cause the car to go into the overboost condition, most likely because they aren't pushing it hard enough to do it while testing.

Wow, 40F? That's pretty high. I the highest temp it ever happened to me at was 5 F. Also yes, I did see the boost spike to maybe 15psi when it happened, and the gears sound right.

 

[bfglitch]

Wow, 40F? That's pretty high. I the highest temp it ever happened to me at was 5 F. Also yes, I did see the boost spike to maybe 15psi when it happened, and the gears sound right.

It has definitely become a more common issue for me since I've switched up to the AFE intakes over stock. Although it still happened while completely stock. We don't see temps below the 20's often here but it does happen. Also I believe altitude + temps effect density as well. I'm fairly close to sea level.

 

[StingerMG]

The only permeant fix to the overboosting issue is to get a ECU tune or a JB4 with EWG wires. I have a 2022 and used to overboost even when stock.

 

[maltbie]

My unmodded 23 GT2 lost boost today driving in 12F temp. Driving on the highway passing another car boost worked and then immediately failed. Drove another 20 miles seeing if it would come back. It didn't. Pulled off into a rest area, turned the engine off, immediately turned it back on and boost came back. Drove another 100 miles and had no more problems.

 

[StingerMG]

My unmodded 23 GT2 lost boost today driving in 12F temp. Driving on the highway passing another car boost worked and then immediately failed. Drove another 20 miles seeing if it would come back. It didn't. Pulled off into a rest area, turned the engine off, immediately turned it back on and boost came back. Drove another 100 miles and had no more problems.

That was exactly my experience while traveling when the temp was around 35F before I got a ECU tune. Unfortunately, I don't know of any fixes other than tuning. Also overboosting doesn't throw a code so the dealer won't find anything.