slow to get moving after long sit

[Big Block 88]

Went to move the 03 today it has been sitting for 2 months now waiting for a new owner.

I put it in gear and it didn't move or load the brakes like usual. Sat for a second and then applied throttle the engine reved but no forward movement. Went to reverse and it took right off, back in D and it sat there for about 30 seconds and then with a pretty good snap started moving forward. I took it out and drove it hard and it felt great, fast shifts but I have noticed 2nd gear shift getting pretty harsh. Fluid level was fine and it smelled fine. But when I sell I want the new owner to know everything I bout the truck so I don't come off as trying to screw someone.

 

[Potthoffdmax]

Drained converter. That's what it sounds like.

 

[Big Block 88]

I thought the same thing but wasn't sure. I had a built 700r4 have issues with that. Never had an alli do that to me. And having reverse work seemed odd, when my 700 had that issue it wouldn't move at all.

 

[Leadfoot]

I thought the same thing but wasn't sure. I had a built 700r4 have issues with that. Never had an alli do that to me. And having reverse work seemed odd, when my 700 had that issue it wouldn't move at all.

If it was a converter drainback issue, I would think it would happen in Forward AND Reverse????

 

[Chevy1925]

Converter drain back Imop. Reverse is a lot lower ratio than first.

 

[paint94979]

what these guys said

 

[Mike L.]

Probably worn out sealing rings on the pump stator support causing converter drain back. These rings were defective since day one. Using LML sealing rings will cure the problem proving the front rotating assembly ( front drum ) is not ring grooved.

 

[SmokeShow]

Mine does this.

 

[Big Block 88]

Thanks fellas I drained it and changed the internal and spin on. Hasn't done it since, but its been moving around more.