IS IT TRANSMISSION PROMBLEM on 1990 Buick Regal

when i start MY 1989 ITS IDLES HIGH AND SHUTS OFF WHEN I ACCELERATE (NO CAT CONVERTER)

Asked by for the 1990 Buick Regal
The transmission doesn't effect idle speed, at idle power is not transmitted to the transmission. Power is only transmitted when the torque converter gets up to a certain rotational speed. It will not effect the idle speed. Your problem is engine or engine control related and needs to be checked out. The car should have a catalytic converter but if it not there it is not causing a restriction in the exhaust system that would prevent the exhaust gasses from exiting the engine, which could cause stalling or inability to idle (in severe cases) or accelerate.