This might be a little hard to explain so please bare with me. I've looked this up and I've come up with about 50 things it could be. And I'm not entirely sure I've seen anyone describe the issues I'm having because there sounds like there's a few different things that sound similar.
To start, I have 2006 Ford Expedition Eddie Bauer. Roughly 145xxx miles. Less than 150xxx. It had a tranny replacement from the person I bought it from, I believe a reman. Anyways, about 3 hours or so into a 4 hour trip I went through a drive thru, constant easing up and stopping. When I eased in the gas to pull up the car started to shake and acted like it wanted to die. It quit fairly quick and didn't do it again on that trip. I had looked it up at the time and thought maybe a converter shudder.
The car hadn't done it again for a few months until when I drove it 600+ miles. It didn't do it at all on that constant trip. It only did it when I had to drive around in a parking lot for a spot. Again, stop and go but its a lot shorter go's. And even then it barely did it. It did do it a couple of times but it wouldn't last for very long. This was roughly 8 months ago.
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