My 2001 nissan pathfinder is not starting am getting everything exept for spark.the security light is not flashing either and the problem starts after the security lite stopped flash.wat can i do?my email address is [email protected]

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You need to have the dealer flash the system.

has someone left on a light is battery so low it wont open? if so hook a charger up to the hot lead on the starter and a ground and charge it some till remote works but if the computer has went into spastic mode then you will have to have it taken to a dealer to get fixed

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Are you saying you don't get warning lights when you turn the key to the on position ?
Did you try cranking the engine in neutral instead of park ?

make sure you have fire at the coil if not there will be no fire to the plugs

have you checked the rotor and distributor cap?

try turning your head lights on, have someone look at lights while you try to start, if lights dim while doing that; may be bad starter

check you spark plug and distrubitor

replace coil pack, or check fuel pump is working,worst case peplace ecu(engine management computor unit)check spark leads,and fit new spark plugs,discard all the ones in the engine ,thats in there,with new ones,,,,,,,