Could use more info-- any codes, what do you mean by searches. What does it feel like??

the torque converter goes in and out of lockup and like it can't decide what to do, but only in overdrive. it also clunks when it shifts into overdrive

Any codes--service engine light, how many miles?

please let me know if you get this figured out. my 01 ssei does exactly the same thing. I drove mine last night on the interstate and it bothered me so bad, I started driving the car in 3rd gear instead of overdrive to eliminate the "searching"

I will try to figure something out tonight if I have time.

i bought mine to the tranny shop and they scanned it and they said its not actually the trans. its a miss in my engine. they said lots of people even mechanics bring in there vehicles for that and is a miss,

That helps. Now we can get this fixed. Pull the plugs and inspect them. See if any look different. Possible causes are bad plugs, bad plug wires, bad coil(*) plug wire to close to O2 sensor wire.

new plugs new wires tested coil everything is good and the problem is still there

Need to know if you have any codes. Other possibility could be a bad cranshaft sensor.

no codes. it was the ignition module. fixed the miss but the trans is still acting a bit strange.