Hesitation at all speeds

[menz]

I do not know if this will help, but my 00 echo had a problem like this one. On hard acceleration it chokes then hit off. On a long drive on a highway, I was pressing on the acceleration very hard but the mileage was superb which meant that the fuel was not delivered to the motor. A friend of mine told me he suspects the MAF so we took the one in my 07 yaris and the car ran great so we bought a new one for the echo and no problems since,