EngineOwner reportCommunity Starter

2021 Hyundai Palisade — single-cylinder misfire comes and goes

CamberCamper245Community StarterMay 8, 20262021 Hyundai Palisade LimitedRaleigh
2021 Hyundai Palisade Limited, about 64,500 miles. A cylinder-specific misfire code appeared after one rough start, then cleared and the engine feels normal. Plugs are not very old. Would you swap coils, inspect plugs, look at injector data, or wait for it to return?
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15 replies

TrackDriver489Community StarterCommunity StarterMay 8, 2026permalink
If it were in my driveway, swap the cheap/easy piece first on the 2021 Hyundai Palisade and see if the fault moves. Don't erase codes until someone who can help has seen them. Do that first. I'd rather be boring and correct. Checking again after work.
TowScout224Community StarterCommunity StarterMay 9, 2026permalink
Fair point. Counterpoint: Loaded-suspension checks on the 2021 Hyundai Palisade catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. If you share a photo of the worksheet, easier to sanity-check. I've seen both outcomes, which is why I'd test instead of assume. That's my plan before I call anyone.
CamberCamper245Community StarterCommunity StarterMay 8, 2026permalink
OP update: scanned the 2021 Hyundai Palisade again and still only have the one pending code, no new lights. I refuse to clear codes until someone else sees them.
PistonBuilder720Community StarterCommunity StarterMay 8, 2026permalink
I'd want a measurement, not a hunch. Capture voltage while the 2021 Hyundai Palisade is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. Verbal 'we'll take care of it' is not a plan. I'll poke at it this weekend.
RoadMom737Community StarterCommunity StarterMay 9, 2026permalink
If it were in my driveway, swap the cheap/easy piece first on the 2021 Hyundai Palisade and see if the fault moves. Save the big job until that test fails. This is from a 2021 Hyundai Palisade in Raleigh with 64,500 miles. Did the worksheet show tax yet? Heat soak after errands is the other window.
CityOwner27Community StarterCommunity StarterMay 9, 2026permalink
Ask what changed right before it started. Get a real battery/charging test on the 2021 Hyundai Palisade, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. I'd want a dollar figure or a measured spec, not 'should be fine.' Happens in gear, not in park, for what that's worth.
CamberCamper245Community StarterCommunity StarterMay 10, 2026permalink
Tried a second charger / second scan and the story on the 2021 Hyundai Palisade didn't change. This is me being the wet blanket on purpose.
NewCarMiles252Community StarterCommunity StarterMay 9, 2026permalink
Intermittent stuff lies if you only catch it once. Move a coil or plug on the 2021 Hyundai Palisade if it's cylinder-specific and see whether the code follows. You'll know quickly if you're on the wrong tree. On “single-cylinder misfire comes and goes,” that was the fork that mattered for me. This is from a 2021 Hyundai Palisade in Raleigh with 64,500 miles. Happy to compare notes if your setup is different. Not driving it hard until I know more.
NewCarMiles252Community StarterCommunity StarterMay 9, 2026permalink
Intermittent stuff lies if you only catch it once. Two 2021 Hyundai Palisades can feel identical and have different causes, so measure before you copy someone else's repair. You'll know quickly if you're on the wrong tree. On “single-cylinder misfire comes and goes,” that was the fork that mattered for me. Happy to compare notes if your setup is different. Not driving it hard until I know more.
BoostShopper780Community StarterCommunity StarterMay 9, 2026permalink
Asking because it changes the advice: Capture voltage while the 2021 Hyundai Palisade is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. This is from a 2021 Hyundai Palisade in Raleigh with 64,500 miles. Keep sale price, fees, and rate as three different conversations. That's coming from doing this as an owner, not a shop. Cold start is when I can actually reproduce it.
TowScout224Community StarterCommunity StarterMay 9, 2026permalink
I'd want a measurement, not a hunch. Capture voltage while the 2021 Hyundai Palisade is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. Happy to compare notes if your setup is different. Not trying to scare you — just skip the expensive first guess. Heat soak after errands is the other window.
TorqueWeekend455Community StarterCommunity StarterMay 10, 2026permalink
This is usually cheaper to test than to guess. Get a real battery/charging test on the 2021 Hyundai Palisade, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. I'd want that in writing, not as a promise. Video is ugly but it shows the hesitation.
ShopHunterCommunity StarterCommunity StarterMay 10, 2026permalink
Start with the test that can prove you wrong. Write temp, speed, and in-gear vs coast when the 2021 Hyundai Palisade does it — then decide on parts. Don't erase codes until someone who can help has seen them. I'd want a dollar figure or a measured spec, not 'should be fine.' Worth doing even if the car feels fine right now. Happens in gear, not in park, for what that's worth.
LongMilesHauler140Community StarterCommunity StarterMay 10, 2026permalink
Not convinced that's the whole story. A pressure test beats staring at a dry driveway if the 2021 Hyundai Palisade is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. If it doesn't change the out-the-door or the repair estimate, it's noise. This is me being the wet blanket on purpose.
LongMilesHauler140Community StarterCommunity StarterMay 10, 2026permalink
Log the conditions before you spend. Capture voltage while the 2021 Hyundai Palisade is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. On “single-cylinder misfire comes and goes,” that was the fork that mattered for me. I'd want a dollar figure or a measured spec, not 'should be fine.' Not interested in a five-hour wait for a shrug.
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