my 95 nissan womt start. It only has spark when ignition is released
95 nissan altama .When you crank the engine there is no spark until you release the
Get a NEW battery...most likely the battery is getting too old to hold it's end of the show up...with reduced voltages and potential is making the ingition relay disengage~ wirebrush the other end of the black 1/0 cable as it attaches to the frame/ground...this will allow full potential with the new battery and not be issuing varying voltages and Amperage potential(s)~
Most likely an ignition switch, if I remember these correctly the switch is located on the back of the key and tumbler assembly and is held on by 2 screws, so you don't have to replace the entire assembly.
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