01 with no mods ,never limped, serviced regular. I posted this in the tranny section with no reply. Please help.

I know they wont go into od until the engine reaches a certain temperature

Mine did this yesterday. I stopped and pumped the primer on the filter. It worked for a few miles, then I replaced the fuel filter. Works great now.

So your saying this could be a fuel problem? Its prolly been about 6000 mi. since fuel filter change.

My 02 will go into overdrive but the torque converter will not lock up untill 145* engine temp, Overdrive is obtained around 45mph.
Stop and count your shifts there will be 1-2 ,2-3 ,3-4, 4-5 ,and tcc lockup lock up occurs ucually at 50 -55 mph under normal throttle and feels like another gear.
You have to listen close as some of these shifts are so smooth you can't feel them, only hear them.
Merle