my 07 idle's goes up and down and it feels like it going to stall out. cleaned the throttle body and mass air flow sensor it helps for a couple days then goes back to that stalling feeling. It is showing no codes or no check engine light. when you put it in N or P the rough idle goes away. It seems like when there is a load on the motor is when you notice it the most. the gas mileage is pretty good but it does seem sluggish at points. Please help with any ideas.

 

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