Cruise control interrupts full throttle on HWY, why?

[O5Q45]

Many of you know my daily travels include i-26 going up a 3400ft elevation to the NC/TN border daily..
When my cruise is SET (any speed) and I need to pass or want to accelerate and I fully depress the gas pedal the car shoots off like a rocket then 2 -3 seconds into this impressive passing, the car just slows and goes into a higher gear.. say from third back to 5th on HWY. This ONLY happens with cruise SET. I have to immediately look down to hit CANCEL OR turn it off altogether hitting the CRUISE button next to CANCEL. This is
1- extremely irritating when smoking a Z
2- irritating
3- dangerous if I’m avoiding a run-away Semi
4- irritating
5- definitely a engineering program error

I’ve had almost every brand available in the USA and I can say with 100% that no car I’ve ever owned did this..

Is this happening to anyone else? 2005 Q

[Q451990]

That does sound odd... Sounds like a glitch in the whole drive by wire logic. I don't think I ever noticed anything like that with our '05 G.

[EdBwoy]

Does this behavior occur anywhere in the neighborhood of 90 mph?

[O5Q45]

It happens at 50mph+ I don’t think I’ve ever had cruise on below 50 and had a need to full throttle. Under 50 a full throttle will lay you back and is typically a hit the brakes situation because it’s a gross amount of excess power.

I will go out this evening and I will set it at 30/35/40/45/50 and see if this only occurs at certain speed. If so, I think NHTSA should be made aware-
At 55 and 60 65 and 70 the cruise will interrupt a full throttle .. up shifts as it takes over car begins to settle in about a 3 second period then realizes I am pressing the peddle full throttle and it takes off again.. I do not know if this repeats.

[BadQ45t]

I know your warranty is long long in your rear view mirror, but would be worthwhile if you can show this happening reliabilty to call Infiniti and get a local dealership involved. Car companies have had to make things right for saftey issues many times in the past. I got new fuel injectors for my 1984 300ZX in 1997 after too many of them were catching on fire.

[O5Q45]

Can either of you guys try to duplicate this phenomenon?
Set cruise to 60-65 and after set, wait maybe 40 seconds and then press the accelerator to the floor. The car should drop into 3rd for a moment, then it’s as if fuel is cut of for a few moments and the process repeats itself..