Problem with Ford 4.2 lts.

Greetings friends, I have a problem with a Ford 150 4.2 Lts V-6 truck, this vehicle has the problem that it does not stand to accelerate, as if it lacked pressure to the gasoline pump but this one is (40-45 pounds of pressure), it does not unbrings or endures when walking as if it were upholstered the tasting but it does not bring, I made tuning, lave laborators in laboratory and work very well, they work in the laboratory. Pulsations in the injectors work very well, occupy scanner and did not throw any fault code and do not turn on the light of Check Engine when it makes the failure, this vehicle when stopping and when accelerating hurriedly it reaches 3000 rpm since it does not stand to unbhal thank you...

Hello,

you could check the MAF sensor signal, because the motor load sensor, another thing would be the TPS sensor, if it is out of range when you accelerate it will not indicate to the ECU that is the fully open acceleration butterfly but partially.

Greetings friends, the problem with this vehicle was that the wedge that goes in the crankshaft suffered wear and the crankshaft pulley was run from time and the cigueñal symptor lost the progress, I disarmed the distribution to revive the chain and there I realized the problem, I already changed the wedge and the pulley and the problem disappeared, thanks to those who supported me with the problem.