99 Ford Explorer having Gear Problems

Hi I have a 99 ford explorer XLS (4.0L, V6) with 77000 miles on it. Lately whenever I start driving the truck jerks slightly while shifting into different gears. If I press the pedal hard it jerks even harder. A new transfer case was put in about 35000 miles ago by a ford dealer. The transfer case oil hasnt been changed since and the transmission oil was changed about 40000 miles ago. Now about my driving habits, I have a light foot, never towed anything with this truck. I rarely use 4X4 in the winter time. I would really appreciate any advice or suggestions on this problem and how to fix it. Thanks, Johnny

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Hi I have a 99 ford explorer XLS (4.0 L, V6) with about 77000 miles on it. Lately whenever I am driving and the car starts shifting into different gears it always jerks slightly and if I push on the pedal harder when starting it jerks even harder. A new tranfer case was put in about 35000 miles ago by ford dealer. So the transfer case oil hasnt been changed since then and the transmission oil was changed about

40000 miles ago. As far as my driving habits go, I have a light foot and never towed anything with this truck either. I use 4X4 only in winter sometimes. I would appreciate any advice or suggestions on this problem and what I should do about fixing it. Thanks Johnny

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jhonny

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