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AT-545 Allison without upshifts
Hi Guys, I have a 1987 International 7.3 Diesel with a AT-545 Trans and it is a school bus. It works just fine in every gear with proper shifts for about 40 to 50 miles. Then it starts downshifting all the way to 1st gear. Next day it will do the same thing, I... Login to read more. ![]()
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6 Replies Received
6 Replies Received