Nissan Axxes acceleration problem

Hello friends, I have a problem that I have not yet been able to solve that you can help me. I have a Nissan Axxes of the year 1990, with KA24 engine and automatic transmission, the problem is Q, having some time of working the engine, when you arrive at 2500RPM it makes the injection cut, (no longer accelerates) I stop the march, I turn off the engine, I wait a couple of minutes, then it is done, and it works well for about 20 minutes, then the problem returns again.

You would have to see what tests you have done, you have already taken codes, you already measured the fuel pressure or if you mediated the generation of the air flow sensor. That is what I would first do to give a diagnosis, say what tests you have done and we can help you more easily.

If I already removed the computer, solve the oxygen sensor and also marked code 14 that is an open circuit of the speed sensor, I really do not know if this is affecting me. The fuel pump is new and continues with the same failure, you may help me with the steps of how to measure the generation of air flow. thank you

If it is equal to the axxes here it is three lines check the voltage that reaches the lines. I think it is 12V, a land and the signal generation is usually in that type is between 0.7 to 1.2V minimal or idle as the term in your country. This signal increases as you accelerate the vehicle until approximately 5V does not reach 5 but it is approximated and is practically almost rule that all reference signs and voltages are 5V in all vehicles. What you can do if you do not have the manufacturer's data is to take the reading when the vehicle does not fail and compare it at the time of the failure. This if the vehicle does not modify the minimum march when presenting the fault.

I send you this address because an article on flow sensors appears I hope it serves as a lot www.e-auta.com.mx/manual_detalle.php?manual_id=222