my 2001 Accord V6 is not shifting in to OD can anyone help me

 

Any codes? Flashing D light?

Could be a great many things but early signs of transmission failure are at the top of my list.

 

No flashing D codes , one for the big dual valve which i switched and no help, all screens have been cleaned, it was rebuild 2 years ago and has been doing fine untill now.. Could it be a speed sencor<

 

Probably not a speed sensor, that would typically set a MIL.

Without a scan tool everything will just be speculation. A scan tool will show all the speed sensors and what gear is being commanded.

The Honda autos usually work right up until they don't and then it is rebuild/replace time.

 

Which valve lock up the torque converter for OD?

 

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