Asked in Saturn (car)
Saturn (car)

96 Saturn with an automatic tranny when you go to put it in gear it clunks really rough Once you start driving the car it shifts up and down extremely hard?



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Could be a few things. First check your transmission fluid if it is low, if so fill it to the fill line. Second check the transmission oils to see if it is dirty; if so have it completely drained and replace transmission filter, and tranmission oil. Approximatly takes 4.2 quarts to refill completely. If problem still persists then most likely the transmissions torque converter is going bad, or there could be a leak in the transmission cooling line, either in the pressure line or the return line. Sometimes the leak may not be detected but can cause a vapor leak and cause the tranny to switch gears hard. Lastly check the vacuum lines to the tranny or if it calls vacuum lines for the peticullar year.