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Most likely the ignition switch or the rod in the steering column is sticking and keeping the switch engaged, possibly the ignition lock cylinder is sticky too. Easy to get lock cylinder out with a small punch that depresses a pin when the lock cylinder is in the run position, look under the steering column by the switch for a hole to poke the punch into and then pull out the lock cylinder.
check for spark, no spark, no fire engine wont run, possible bad ignition coil, wire from coil to distributor cap, no power to ignition coil from ignition switch (rare) wire broken to ignition coil (even rarer)
WHEN TROUBLE SHOOT CAR CHECK FOR SPARK AT PLUGS FIRST IF NO.CHECK IGNITION FUSE TO IGNITION COIL OR COILS AND IGNITION MODULE.IF FUSE GOOD CAR NEED SCANNING FOR CRANKSHAFT SENSOR FAULT OR IGNITION MODULE FAULT.IF IGNITION SYSTEM OKAY CHANGE FUEL FILTER IF NOT BEEN CHANGED LONG TIME..CHECK TO SEE IF YOU HEAR FUEL PUMP RUN IN FUEL TANK WHEN YOU TURN IGNITION KEY ON FOR 3 SECONDS.THE FUEL PUMP WILL TURN ON 3 SECONDS THEN TURN OFF.IF YOU HEAR NO FUEL PUMP.CHECK FUSE AND RELAY.IF BOTH GOOD.STILL HAVE CAR CODE SCANNED FIRST.
could be a bad crank sensor. it tells the ecu when to spark. if the crank sensor is bad, the computer will not ground the ignition coil. so in turn there will be no spark to ignition coil. but first check for a bad ignition switch. if bad it will loose its spark. for an ignition switch controls about 50% of the vehicles total power need. good- luck!!
You need to check for spark at the number 1 spark plug if no spark then
it could be a few things
1.crank shaft position sensor
2. distributor cap or plugs
3. pick up coil inside distributor
4. ignition coil
6.Blowen fuse check both engine fuses and inside cab fuses
7. oil pressure switch
You can pull the coil wire going into the distributor cap and check for
spark there if no spark there then your problem will be from the
ignition coil back
Can you explain more so I can help. What do you mean still wont turn on, engines doesn't start or starter motor doesn't turn. Have u taken out a spark plug and connected it to the cable put the end of the spark plug to a ground and make someone turn on the engine for a few seconds you should see some blue sparks. Carefully use gloves. If no sparks, spark plug is bad next thing to check instead of putting the spark plug in the cable put Philips screwdirver put the screwdriver near a ground not touching about one inch make someone turn the engine for a couple of second you should see the spark jumping from the screwdriver to the ground, If there are no sparks ignition coil or spark plug cables are not good. But u say u changed ignition coil so maybe your cables are not good. There is a connector near the ignition coil disconnect it and turn ignition switch on measure the voltage you should have in between 12vdc + or - .5 vdc if no voltage present there is a blown fuse, Check for it
Your ignition is what supplys your spark pluggs with electricity in order to creat combustion in your engine. Most older cars have distributers, if you drive a focus with a zetec it will have a coil pack. I have a 2002 Focus SVT that I upgraded the ignition system to a full racing system for around $200. What you need to change is the coil pack, spark pluggs and spark plugg wires. You only have to remove about four bolts on the coil pack and it just pulls out.
The ignition switch . where you turn the key at. If it has spark and you have checked everything else . When you turn on the key, the dashlights , are supposed to turn on and then go off as you turn further to start the car. If there are no lights lighting as you turn on the key , you may have a faulty igniton switch.