Normally heat or vibration.
could be distributor, coil or ignition module. usually the ignition modules fail first on them.
yes this does this to stop u from doing damage to the engine
most of this problem is ignition coil fail, you can test it by exchange with other one.
Inside of distriutor cap under the rotor (pick up stator). Very seldom fail. About 90 us dollars at local parts house.
Yes, a bad ignition coil / misfire will cause an unburned mixture of gas/air to go into cat converter which will than combust in it and cause damage to either catalitic converter, oxygen sensor(s) or both. J.Dropic
either the coil is cactus or the ignition module. i'd start there. fords have problems cos the coils overheat due to lack of cold air flow and they crack. this usually causes the ignition module to fail. if you change one, you change the other. also bad earths cause ignition modules to fail.
I'm not sure I understand your question. The ignition module is suspect in this case and yes, it's under the distributor cap. You may also want to replace the distributor cap and rotor while your at it, they're cheap parts and hair-line cracks in a distributor cap can be hard to detect. If all of these fail I'd look at replacing the coil and coil wire to the distributor.
F is a Fail (under 60%), so a D which is 60% or higher is a pass.
If any part in the ignition circuit is defective it can result in no spark at the spark plugs. Some components to check" The ignition switch could have failed. The engine computer or associated wiring may have failed. The distributor could be bad or have a bad component. The pickup coil may have failed. The ignition module can fail. The rotor or the distributor cap could have failed. The coil may be bad, or associated wiring could have failed. The wire from the coil to the center of the distributor cap can fail. Spark plug wires may need replacement. .
Ignition coilsIgnition coils are very rugged and reliable, but can fail for a variety of reasons. Heat and vibration can damage the coil's windings and insulation causing shorts or opens in the primary or secondary windings. But the number one killer of ignition coils is voltage overload caused by bad spark plugs or plug wires.
Check the ignition coil. At cold coils generally operate properly, when the coil heats a failing unit will start to break down and fail causing misfiring and poor engine operation. Second check for a failing ignition controller in the distributor.