I have a problem with my car. When I try to start my engine, it won't start. Sometimes I have to wait 10 to 20 minutes after that, then it will start. Then sometimes it just won't start at all.

Well there is no shutoff relay, but there is a fuel pump relay that powers the pump.
I would check it first. The computer grounds the relay for 3 seconds when you crank the engine to boost fuel pressure. Once the engine starts the pump is powered only if you have oil pressure.

plugs leads timing

it might be a bare spot in the starter

no way that is

STARTER RELAY SWITCH

check fuel pressure regulator,throttle position sensor,mass air flow meter

Check the immobilizer system, sometimes the fault is in the engine ECM

YOU MAY HAVE A BAD DOOR AJAR SWITCH. HOWEVER, YO HAVE A TIMER THAT SHUTS OFF THE INTERIOR LIGHTS AFTER 300 MINUTES. IT'S CALLED A BATTERY SAVER FEATURE. TEST IT OUT.

THE EXTENDED CRANK MAY BE A CHECK VALVE IN THE FUEL PUMP IN THE TANK, ALLOWING PRESSURE TO DROP WHEN YOU TURN THE ENGINE OFF.
OR A BAD FUEL PRESSURE REGULATOR ON THE ENGIEN FUEL RAIL.

TRY THIS TEST, TURN KEY TO "ON" POSITION, WAIT 5 SECONDS, SHUT OFF KEY FOR 30 SECONDS. TURN KEY ON, WAIT 5 SECONDS, THEN START ENGINE. IF IT STARTS RIGHT UP, YOU ARE LOSING FUEL PRESSURE WITH ENGINE OFF.

THIS BUILDS UP PRESSURE IF IT DROPPED DURING SHUT DOWN.
REPORT TEST RESULTS.

PLEAE RATE, THANKS

insert key wait 10 seconds then start

tcm is located in drivers side front wheelwell. will have to remove wheel and wheel well splash shield. unhook 60 pin connector and three screws holding tcm to vehicle. will have to set pinion factor and quick learn function via factory scan tool solenoid pacxk located below air cleaner on transmission facing front of vehicle