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Matt
Matt, Engineer
Category: Nissan
Satisfied Customers: 20576
Experience:  BEng hons Mech engineering, worked in auto industry for 22 years on engine, transmission and suspension design
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Turn 1995 Maxima SE starting system on after it is kept dead

Customer Question

turn 1995 Maxima SE starting system on after it is kept dead even after the theft alarm turns off.
Submitted: 7 months ago.
Category: Nissan
Customer: replied 7 months ago.
"starting system is kept dead even after the theft alarm turns off." Right from FSM EL243
Customer: replied 7 months ago.
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Customer: replied 7 months ago.
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Customer: replied 7 months ago.
How to turn 1995 Maxima SE, manual, starting system back on after "it is kept dead even after the theft alarm turns off."
From FSM EL243
Alarm went off. Turned off. Reset. Starter turns engine over normally. No ignition whatsoever. Not even a puff. QE engine.
ECM 5x5. Battery disconnected, left off a couple days.
Expert:  Matt replied 7 months ago.
Hello 1st check for spark by removing one of the spark plugs and plug it back into its lead and rest it on the metal of the engine ( DO NOT hold it on place by hand) then have your assistant turn the engine over whilst you watch the plug. It should give a fat blue spark at regular intervals. If not then check that there's power to the coil pack (at the other end of the plug lead) using a meter. If there’s 12V at the pack but no spark then check the ECU power supply (fuse and relay) and also the connections to the crankshaft speed sensor. If there is a spark and its still not starting then its likely that the ECU isn't opening the fuel injectors, if the injectors are working you can hear them click - its difficult to hear them with background noise so use a long screwdriver like a stethoscope, placing the handle end in your ear and the metal tip against the body of the injector whilst your assistant turns the engine over.If you can't hear anything check the ECU power is present by measuring voltage at the fusebox and on its relay socket if OK then check the connections to the crank speed sensor and consider replacing this sensor if the wiring / connections look OK If the car will start using a squirt of quick/ easi start into the intake then this confirms the problem is lack of fuel Also its worth checking that the electric pump that feeds the injectors is working correctly, it should run for a few seconds then switch off when you first turn the ignition on. If you remove the filler cap to the fuel tank and listen inside while your assistant flicks the ignition you should hear it clearlyIf the connections to this are corroded or damaged then the pump could stop at any time. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse, ideally measure the voltage at the pump and check its getting 12V.You should be getting around 3 bar measured at the injector rail check to see if the plugs are getting wet indicating fuel is flowing – if not and the injectors are opening then there’s a problem with the pump or the filter or even the pressure regulator
Expert:  Matt replied 7 months ago.
Hido you still need help?Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you