OK, I am not sure how to describe this problem. I am also not sure if it is a problem. I notice this symptom since forever, but I had never been able to zero down what I was experiencing until lately
Here it goes:
I live in VA and the roads are somewhat hilly. As I drive my MDX at any cruising speed, some times (hard to reproduce at will) I felt the car lost power as it goes up and down hilly roads and I could feel a subtle vibration from gas paddle which made me to accelerate more. But, at that time I had to push the paddle hard to rev up so the car gains power. Furthermore, at that point I notice the car rpm drop to about 1000 rpm and the car slows down.
I have other automatic cars, but I don't experience this symptom with them which made me believe that this is a 'problem'.
Since the car is still under warranty (ends this year 2009), I brought it to the dealer and had a hard time to explain it. Of course, the dealer said that they don't see any problem.
Has any one experience this problem?