What causes jerking of the engine in idling and loose of power during acceleration

Thanks...but please....the Toyota Land cruiser V8 2009 Model is bullet proved car...

OK , well now that I know you actually check your post for responses , we can start.(Thanks , by the way , most people don't).First thought I have , would be to carefully inspect the mass air flow for debris. We had a 2013 Oddysey in the shop a few weeks ago and it had the same symptoms as you describe , it ended up being a SMALL piece of a dandelion flower(it would've fit on your pinky nail) inside the sensor. A bit difficult to see until sensor was removed from housing , but between carefully picking and using gentle compressed air , we got all pieces out and the damn thing ran like brand new(which it kinda was).It would start and idle like crap , sputter and hesitate and three other guys there didn't even want to test drive it , it ran so bad (and stall once in a while) , I took it out on the road , and just like yours , once it got up to speed(air volume through intake higher) the little freakin dandelion would move enough to stop causing interference with the sensor and the van would run like crazy---until I let off the throttle and the engine slowed down , which in turn lowered the volume of air and pressure against the 'debris' and it would screw up al over again--till I gagged it and waited 2or 3 seconds and then BOOM , off to the races again! wierd what a stupid flower can do ! hope this little rant helps. Let me know what you find. Also if you do have an actual scanner that can read live data , you can verify it with that , as long as you know what the 'base' reading (engine off) is supposed to be. - that's how I originally pinpointed the MAF as my first suspected component......any way blah , blah blah, ..let me know .