Hi Akthor, my name is Tom, and we just bought an 01 expedition, when we test drove it, I noticed it had a slight hesitation and told the saleman about it. He assured me they would take care of the problem. I also noticed the truck felt like it swayed alot. When we got back to the lot, the front wheels were turned and I noticed the front sway bar bolts and bushing we missing. Anyways, they replaced them, and also the lower ball joints. We went to pick up the vehicle, and when I got in I noticed it was still stuttering and hesitating. I went right back in and had the service manager go for a ride with me. He told me they had replaced the throttle positioning senson. They have given us a rental vehicle while they are trying to fix this hesitation. From all things, it sounds like what you are describing with your vehicle. Did you get it fixed yet? Is the problem resolved? By the way, we just bought this after owning a 2000 ford explorer sport for 4 months, that we had nothing but problems with.