Transmission struggles to engage

Hi FordguyF250,

Sounds like you have a pump issue. When the pressure is low it will not engage. You giving it a little gas, will raise the pressure and that will force the engagement.

However, I would expect it to slip but it is not. So let's start with monitoring the line pressure and go from there. If this checks out then most likely you have an accumulator or solenoid sticking.

Let me know what the pressure is and we can go from there. Thanks