I have an 82nissan datsun 720 and it runs great but sometimes when Im riding down the road the accelarator seems to go out. Its like it runs out of gas. Ive replace fuel pump and filter. The problem seems to happen more when going up hill or at a higher rpm. I can pump the gas and it'll keep it going. But it only wants to cut out again. What could be the source of the problem?

SOURCE: car runs good then cuts

I have a 1994 bucik Park Avenue Ultra The car dirve good then it cuts off the service engine light will come on and stay on for the duration of the trip. the car will start back up but now it will cut off and take a while for it to start back up, sometimes when im driving and give it gas it will stall unless i ease off the gas a slightly give it gas. whats the problem? I also have a 1994 buick Lesabre had a slight similar problem I was told its the throttle control sensor is it?