Overdrive

What if it is the tranny pump or solenoid wht then?? And thanks so much we just had a baby boy today and trying to get it fixed

It drives fine out of overdrive. Does tht rule out the pump? If not how much does tht cost? and when its in overdrive it want idle properly and would cut off until i set the idle screw all the way up.

sometimes the check engine light comes on and sometimes it doesnt. And it only skips and idles poorly when in overdrive when i press the overdrive button on the shifter to take it out of overdrive it runs and idles fine just a higher rpms.