99 Expedition acting funny here recently. Right before it goes up a gear it sits there and the transmission starts to shudder. If I just leave my foot in same spot and let it try to shift itself, the shudder gets more intense. As soon as I give it more gas, it jumps to the next gear.

Any ideas what to do? Thanks.

 

My 99 did exactly this - tranny fluid flush resolved it.

 

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