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dolphintat1
Guest
I hear a low whining noise. sometimes I have to put it in reverse before drive then it drives for acouple minutes then totally acts as though its slips with no power to trans. I turn it off wait a few minutes start it then it will drive for acouple minutes. 77 chevy van 350 turbo trans. its been sitting for one year. trans fluid is full. maybe torque conveter? ran fine when parked 1 yr. ago. also will old gas make it run rough and lil black smoke like its running rich? I added 20.00 of fresh gas now has half tank of fresh and old.