This is a wierd one. My wife has a 95 GT, and it dies when running on the hiway, uusually around 60-70. It does not happen all the time and is not consistant. What I mean is some times it is a slight hesitation, then power comes back. Other time she says it is violent and shaked the whole car ( I think because the engine dies out at 70 mph). When it is bad she said she saw the battery and check engine light come on (Again I assume because the engine died). It has always been running again by the time she pulls over, so even when it is violent, it is so quick that it restarts itself. I am not even sure where to begine. I have driven the car on the hiway several times and have never noticed anything. Other than this the car runs perfectly.