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Without knowing the year of your vehicle, I can only assume that a component, probably the ignition control module is getting too hot. This could be the module is bad or the resistance between the coils and the spark plugs is too high. Check the resistance in the ignition wires to see if they are within specs and check the spark plugs themselves.
A new module could solve your problem but, if the cause of its predecessor's failure is not fully addressed.it could happen again.
The ignition system on your 5.0L uses a distributor type system and will include the following components:
Ignition control module (ICM). Depending on the year of your specific Ford, it'll have a inner-fender mounted ignition control module or a distributor mounted ignition control module. hot sure which you have.
Ignition coil. you replaced it.
PIP (Profile Ignition Pickup) sensor. This is Ford's name for the crank sensor and is mounted inside the distributor. The most common name for this component is the pick up coil.
Distributor cap and rotor. you replaced
Spark plug wires. you replaced.
The thing to keep in mind about the ignition system is that all engine cylinders must get spark and the one thing that will stop the ignition system from creating spark on a wholesale scale is a BAD crank sensor.Have you pulled a plug then using some insulated pliers grounded it to the vehicle and turned it over to see if you have spark, that'll tell you alot.takes two people of course.Best of luck and hope this helps.
When it won't start you will need to check for spark and fuel pressure to figure out if you are dealing with the ignition system or fuel system. Is the check engine light on when the engine is running ?
Have you ever heard of testing before replacing parts ? Fuel pressure an flow tesing , testing the electrical circuit for the fuel pump , amp draw testing , voltage drop testing etc... Thier are no magical fixes in auto repair . No spark ! check B+ voltage an ground circuits for the ignition system , Ignition System Designs Operation and Testing an SD Premium video
Spray starting fluid into the air intake of the engine, if it starts and you have fuel pressure you have no injection or injector pulse as we call it. Check ECM fuse one and two for continuity if it starts with fluid..
your terminology is wrong.if it cranks its turning over what you mean is it won`t start(fire up) as you said at the beginning.anyways it sounds like you could have a fuel pump problem that stop working.this happens alot.you should check for spark at the plugs to make sure its not an ignition problem.did you notice a check engine light on when it was running.if so there will be a code in the ecm and may be the cause of your problem.
That is going to be an ignition coil. That is what produces spark. But it could be the knock sensor or the cam sensor also. If they do not give the coil the signal to fire, then the coil will not spark.
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