Every single change valve responds to a specific force assortment; so when the auto goes speedier, the 2-to-3 shift valve will just take over, because the strain with the governor is high adequate to induce that valve. Automatic Transmission So, an automatic transmission provides a definite set of equipment ranges. https://gearbox-auto19631.blogpixi.com/34043896/how-much-you-need-to-expect-you-ll-pay-for-a-good-gearbox-auto