I would definitely try another one if you can. Does anyone local to you that you know own one of these? Also, has there been any service to the car recently? Possibly check for bad or loose grounds

 

Did it do this all of a sudden, or progressively got worse over time?

More so at higher speeds, or any speeds?

Have you tried the ignitors?

I had a similar problem and it was a bad ignitor. They are fairly cheap and can be found on other Toyota's. Might be the cheapest way to start. Double check the throttle cable over the engine, Check the voltage across the TPS, clean the MAF, try a different ECU. If the computer is in limp mode, there is a problem. If before it ran fine, then take it somewhere and have the codes pulled. I see you are from Destin, my old stomping ground when I was at Eglin, AFB. Try calling a local Import Shop and see if they will lend you a hand in pulling a codes. Do this first, and then start eliminating other things by troubleshooting.

Do you hear the fuel pump running?

You might want to try the fuel pump ECU mod. Takes about 15 minutes and would eliminate that all together, and you are out ZERO money.

 

yes that's what I meant by physical damage.. Do you think they can still go bad without seeing anything wrong?

 

It ran fine, then progressively started to get worse.. you may be right on the money... I will try that fuel pump mod again, I do hear it running, I haven't checked the igniters, I used to own the local import shop here with rob, Now there really isn't any more shops because of the small town and economy... I'm just coming over from 240's so this is kind of new to me, thanks for your help! I have a buddy in St Louis but that to far to swap ecu's..

it is always in a (limp mode) now, before it would be fine, and switch back and forth while I was driving... but once it ran good at any speed it was fine until I shut it off or it was the next day,,

 

The way capacitors go bad is over time, the gel inside them leaks out, thusly, you should see the liquid on the circuit board around the capacitor if it's faulty.

 

I searched, cant find the igniters and how to test / replace

is that the same thing as the coil?

 

Any updates or progress? Get a chance to try anything else.?

 

Finally Fixed! ECU was bad.. Special thanks to the LS forums.