Anyone heard of this A4LD problem?...strange

[Tibbits]

Ok, If you try to take off with the selector in OD it will not go anywhere. If you take off with the selector in D,2,1 it will work perfectly fine. Reverse works perfectly fine also... But, Overdrive is not broke if you get up to speed and put the selector into OD it will shift into OD and will drive fine. But when the vehicle comes to a stop sign and you try to take off again and the selector is in OD, it will not go anywhere. It acts like its in neutral. Shifting to D,2,1 does not work it still will not move. Shifting to neutral first and then D,2,1 works prefectly and away you go. This is how the vehicle acts everytime, no intermittent shifting problems, no slipping, nothing like that. I originally thought the traney was mechanically broke but Iam not so sure now, anyone have any thoughts?
1990 Ranger 4.0L 4X4 A4LD

 

[Bent Bolt]

O/D one way clutch failed. Fairly common failure on A4LD's .

 

[Tibbits]

can I just keep driving it like this and will it stay working?

 

[Frmboybuck]

can I just keep driving it like this and will it stay working?

Yes, till it quits working. It eventually will

 

[Tibbits]

how does it work in OD, but not when you take off in OD? It seems like its something electronic.

 

[SMTGREG]

When the OD switch is off the coast clutch is applied and torque by passes the defective one way clutch, in the simplest of terms. I would drive it as little as possible if you plan on rebuilding this trans.

 

[Tibbits]

Would It be worth putting one that came off a 2.9L 4X4 onto my 4.0L? forund one on craigslist for a few hundred bucks. My mechanic says he wouldnt waste 1200$ on a new one because my 4.0L engine could blow at any time, they suposedly have head problems and mine leaks a tiny bit of coolant into the #1 cylinder.