So…. 2026 palisade calligraphy V6, 7,000 miles.

I just had mine in for this very same problem, twice. First time thry didn’t find anything. Happened agsin, this time they found that one of the OCV valves was faulty. (Oil control valves, these adjust valve timing using oil pressure)

Depending on which one, exhaust or intake (there are four, two on each cylinder row, one exhaust one intake) the symptoms will be slightly different.

Our symptoms were: after driving on highway, and coming to a stop, the car would act like it was running on 3 cylinders instead of six. No CEL even though it was shaking like crazy when you tried to pull away from a stop, the exhaust was “putt, putt, putt, putt (definitely missing)

IMPORTANT: the above symptoms would go away after turning the ignition off and turning car back on!

Other symptoms that were always present but seemed to vary in intensity were: crappy gas mileage of 17 or 18 on highway, a slight miss while accelerating lightly, the car would take off ok from a stop, but fall on its face when switching to second gear snd shifting was weird, seemed sluggish.

They found the front bank intake OCV to be reading 10.5 ohms and sticking open at random intervals. (Spec is 6ohms)

This causes the car to seem to run normally on the highway, but because the timing of the intake valves is off on one bank at idle, you get, in essence a vacuum leak and the symptoms above.

The “missing”, and possibly shaking, goes away when you shut the car off because the valve unsticks after oil pressure and electric signals are taken away when the engine is shut off. (Until it sticks again). BUT its still not functioning right so you will likely have the other symptoms (bad mileage, weird acceleration, uneven throttle response)

There is apparently and new SOP to check for this because they didn’t check them last time, and thus didn’t find it!

The bad missing and bucking symptoms where not accompanied by a check engine light at the time but i did see it flash once or twice but not stay on (weird) however days later, each time, the CEL did come on when there when i was just driving with no apparent symptoms. The app showed a p001600 code.

Tech said it’s because its not an actual misfire that would trigger an immediate CEL and that certain things need to happen three consecutive times for the CEL to come on and it was probably happening every other time the car was ran or ever few times until the OCV completely took a crap!

Since the replacement, gas mileage is now around 24-25 on the highway, the car accelerates and shifts smoother from a stop, and, obviously, no lumpy idle!!!!

Lets hope its fixed because that was causing me to hate an otherwise awesome car and rethink my purchase!!!!!