You need to have those sensor's circuits tested. One of them probably has a fault. Look at a Haynes or Chilton repair manual for test procedures for the sensors.
SOURCE: 1995 nissan pickup truck fuel problem
Fuel injected or carb? Make sure fuel line itself is clear. Some pumps are designed to self regulate (carb systems) some continually pump and a psi regulator sends back the excess fuel back to the tank (fuel inj systems) If the line is obstructed then pump can't deliver fuel fulltime.
If you think pump is not on consistent, try running a dedicated wire through a switch directly to the pump. If it works then you are looking for an electrical fault going to pump. Good luck.
SOURCE: runs good most of the
did you erase old stored codes some cars just disconnet neg batt will work
SOURCE: replaced mass air flow sensor, fuel filter, air
check timing make sure it;s ok . second check your exhaust system if it;s close , start accilerate for 3 min. then look all exhaust pipe (silencer) if there is difrent coler . check Oxgen sensor it;s ok .
and if you have no enough fuel presure try close the return line temporary . maf, sensor only when there it is highand low accilerator.
SOURCE: 2007 NISSAN QUEST It starts and then dies within 2-3 seconds.
hello good day, reverse your air filter, make the bottom to top,, if is not work change the high tension wires
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