Question about 1995 Nissan Sentra
Already checked fuel pressure, fuel pump, injectors, and ignition spark. Computer not sending signal for fuel system to activate.
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Posted on Jan 02, 2017
SOURCE: the cilynder #1 and spark
Did you change the spark plug?? Your car (1993) has a distibutor assy, which means it has ignition wires for each plug. How are your wires??cap?? rotor?? Have you ever done ignition tune up?? If the answer is yes and you have already installed new injector and pressure regulator (althoug it still could be a injection issue/ECM or computer, because ECM is what drives the injectors. If the ECM or wiring to #1 injector has an issue, the injector will not fire off and put gas into the cylinder, resulting in a misfire.) Remove #1 injector connector and check to see if you have power/12V on one side of the connector. If you have 12V there, than check the other wire for continuity to the ECM. You will need wiring diagram to find the right wire color at the ECM. That other wire goes into the ECM to the driver which opens and closes the injector depending on your demands as far as gas pedal input. That driver may be bad, causing the injector not to shoot gasoline. Than I would be looking into a engine issue, such as burned valve, or head gasket problem (coolant getting into #1 cylinder, flooding your spark plug). Tough to diagnose over the computer and not looking at it my self. Let me know what you find.
Posted on Dec 21, 2008
Just had the same problem. replaced cap rotor, plugs wires..etc. still would crank no start. i got really angry with this so i went old skool on it, and treated it like my 1975 chevy one ton. I hammered the gas and cranked it till it sputtered and eventually started. note: by pressing the gas to the floor and cranking will put computer in recovery mode and not let new fuel in to the engine. now it is able to try to burn all the left over fuel sitting in each cylinder. after about 45sec. to a min of cranking she started to come to life again. one other problem did come up. after blowing out all the extra fuel and ****, it did blow my pre-cat o2 sensor. no big deal $45.00 at checker. hope this helps
Posted on Jan 20, 2009
You could have faulty altenator or short causing the battery to drain. The engine light usually comes on when anything electrical or sensor wise is faulty. Brake light will come on if, low brake fluid, e-brake handle is up.
Posted on Aug 04, 2009
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