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Revs are around 5-6000 but just doesnt wanna seem to go any more. Any suggestions?
? PWR mode, MANU mode OD on/off?(but your MPH drops) 
I've tried it with the o/d on and off and I get ther same thing really. Hits 80MPH fast as anything, changes up to 3rd and then seems to have nothing more. Creeps slowly up to 100 and evens out around 5-6000 revs...... The overdrive is controlled electronically, possibly a fault? I seem to recall that if the temp sensor fails the box won't select third. [/quote] The overdrive is controlled electronically, possibly a fault? I seem to recall that if the temp sensor fails the box won't select third...(cams etc) and made sure they were cool!..? Might check the timing though, could be slightly out. Thanks for all the suggestions 
*may* be related in that my TVIS actuator pipe had split just where it connected to the actual actuator. I think it is abbreviated TVIS. But it's the 4 butterfly valves in the intake system that open at higher rpm to increase the size of the intake plenum. It would be going like the clappers. Then, there would be an unnatural slowing down of the rate of acceleration and a funny kind of engine note. I don't know what made me check out this pipe, just one of those moments of inspiration after reading through the Toyota manual quite at random. But the darned thing was split so the TVIS was not responding.*all* the vacuum lines as the pipe is available from Toyota at relatively little cost. From memory, you can buy a 1M or a 3M length and just cut to size. Perhaps worth checking in your case. 