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Showing results for tags 'up-shifting'.
What is the optimal warm engine idle speed for a 1948 6 cylinder Chrysler with fluid drive and the hydraulic transmission? I was having trouble with the transmission not wanting to shift until I was going faster than the factory recommendations of 12-14 MPH. I was having to get up to 25-30 MPH in high range (and sometimes trying more than once) before it up-shifted. When I last drove it, it would not up-shift at all. Someone suggested it might be as simple as the idle speed. I can go through the factory service recommendations for up-shifting problems when I get a free day, and it mentions RPMs, but without giving the proper setting. I want to address the idle speed issue before I check the electrical.