The 4-speed auto trans in my 73 280C works real nice, except for one baffling thing. When I slow down from speed or go up a hill, it does not downshift automatically. I can down shift it manually just fine but I'm curious what would cause this fault and if it's even worth fixing since the manual shift method seems to work.

Thanks in advance for the great advice I'll get!
Catrinus
Portland, OR

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