If you have fuel at the fuel rail and have injector pulse, then you likely have no spark. The spark system contains, plugs wires, then the wires go to coil packs. These coil packs are mounted on top of an ignition module. The ignition modules has two wires that go to the crankshaft position sensor which provides the power.
If you have spark in some cylinders, then the coil pack is bad. If you have no spark what so ever, then test the crankshaft position sensor with a voltmeter and the wire harness disconnected. If you don't have an ohm or volt reading, replace it. If you do have a reading, then test the ignition module.
Do check all fuses first.
HAVE VECHICLE SCANNED FOR FAULTY IGNITION MODULE OR CRANKSHAFT SENSOR.CHECK IGNITION MODULE FUSE FIRST.
LOOK FOR A 15 AMP FUSE ELECTRICAL IGNITION SYSTEM.LOOK ON FUSE COVER IT WILL TELL YOU WHERE FUSE LOCATED.FUSE IS UNDER THE HOOD AT FUSE AND RELAY CENTER.IF SEE NO BLOWED IGNITION FUSE.TO KEEP FROM SPENDING A WHOLE LOT OF MONEY.HAVE VECHICLE SCANNED NO SPARK COULD BE CRANKSHAFT POSITION SENSOR OR IGNITION MODULE.THE SCANNER WILL GIVE YOU A FAULT CODE IF EITHER ONE AT FAULT. BOTH ARE EXPENSIVE.SCAN FIRST BEFORE FIXING. COULD BE A LOOSE BATTERY POWER FEED WIRE AT THE IGNITION COILS TO MODULE.
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where is the ignition module fuse? I have checked all fuses in the interior and under the hood,my caris a regal with a 3800 engine ,run fine shut it off no start?
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