98 ASTRO VAN. WHEN YOU TAKE OFF AFTER AVERY START UP(HOT/COLD) IT LIKE THERE IS NO GAS. IF YOU DON'T PUSH IT IT WILL TAKE A HOLD AND GO ON. IT DID THIS ABOUT A YEAR AGO WHEN i WAS 200 MILES AWAY FROM HOME. IT TOOK THE C. CONVERTER OFF AND KNOCK OUT THE GUTS. IT RAN FINE FOR ABOUT 2 MONTHS. FOR THE LAST 10 MONTHS IT JUST WHEN YOU START UP. STARTING YESTERDAY WHEN YOUR GOING DOWN THE ROAD IT JUST PULLS DOWN , NO POWER. YOU CAN PULL OVER AND SHUT THE MOTOR OFF. THEN START UP AND EASE IT ON AND IT WILL PICK UP AND GO ON. COULD IT BE THE EXHAUST SENSORS?
TERRY