Question about 2002 Nissan Altima

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Starting i have replaced engine in my 2.5 2002 nissan altima, cant get it to run. no fire on one side of fuel injectors, any saloutions?

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  • fallcreekmtr Aug 10, 2008

    this is a used engine that i got out of a wrecked car. engine ran fine before i removed from wreck. i have no fire on all 1 side of all four fuel injectors.each injector has two wires,one hasconstant fire on it. the other should have intermitting fire.this is the problem, no fire on intermitting side. thanks, bill

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  • Nissan Master
  • 705 Answers

What do you mean "no fire on 1 side of injectors??" 1 injector no firing?? or what?? was the engine that you put in there used?? from junk yard?? If so, put the injectors back from your engine onto the engine you just put in there.

Posted on Aug 10, 2008

  • Phil Lovisek
    Phil Lovisek Aug 10, 2008

    Well this system is pretty sophisticated. your injectors are beeing driven by the ECM (computer, but you also have inputs like crank and cam sensors and others to make the car run)So, did you also replace the ECM?? Do you have a noid light set?? If so, plug it into the injector connector one at a time and crank the car over and observe as to what happens. Post results. It also could be blown fuse for the ECM. You haven't pinched any wires replacing the engine by chance?? Does the "check engine light " come on when the key is in ACC position?? Let me know.

    As far as the constant fire?? You will find 12V on one side of the connector. The other goes to the ECM to ground the circuit and make the injector fire ON/OFF like a relay. ECM is the ground side for this circuit. Let me know what you find.

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