when i drive my truck sometimes doesnt shift or late to shift on 2004 Ford Ranger

after a long drive the O.D overdrive is blinking,i replace transmission range and transmission filter too,but still the problem come out after a long drive,is there other sensor that need to replace? what is shift solenoid?

Asked by for the 2004 Ford Ranger
1 answer 1 comment
possibly low fluid
thank you,how many quarts then of transmission oil should i put on my transmission '04 ford ranger 2.3 2x2 automatic trransmission,if too much oil whats the side effect too?