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Vehicle ignition coils and coil packs are nothing more than transformers that take the vehicle battery voltage [usually 12 Volts DC (direct current)] and convert it to very high voltage to create a hot spark at the spark plug gap.
Vehicle ignition Transformers are composed of two coils of wire. One coil is called the "primary" winding and is where electrical current is put into the coil. The second coil winding is called the "secondary," and when the flow of electrical current established in the primary winding is turned off, then a current is INDUCED in the secondary winding causing a tremendous increase in voltage at the secondary coil's output to the spark plug.
IF, and I emphasize IF, you are getting electrical current TO the coil pack and yet NO output from the pack, then the pack is defective.
This is usually caused by a broken or burned through wire in one of the two [the primary or secondary] coil windings.
I have never heard of anyone successfully "rebuilding" an ignition coil so this means the coil must be replaced. However, before spending the money to replace an ignition coil, I strongly suggest that you make sure that the coil is being supplied with the proper voltage and signal pulse.
There is nothing I hate worse than spending the money and time to replace a component to only discover later that the replacement did not solve the problem, and thus meaning that the replaced component was probably good and did not need replacement!!!!!
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∙ 14y ago
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Why is there No fire spark plug for 1995 dodge intrpid?
bad coil pack or bad wire
Does 5.3liter engines have spark plug wires or a coil pack?
Both, each spark plug has it's own coil pack that creates the spark, and a wire to connect it to the plug.
Where is the distributor or coil pack on my ford explorer?
On a 2003 Explorer, there is no distributor or coil pack. Each spark plug has it's own coil pack as part of the spark plug boot.
Coil pack or spark plug on 2004 Chevy Trailblazer?
spark plug
Where is the Coil pack in a 1996 Subaru?
Follow any of the spark plug wires from the spark plug to the top of the engine and they all will meet at the coil pack
1997 Dodge Intrepid is idling rough have changed plugs. but still idels rough?
Spark plug wires? Coil pack? Dirty injector? Spark plug wires? Coil pack? Dirty injector? Spark plug wires? Coil pack? Dirty injector?
What could cause a 'no-spark' condition 1993 f-150 5.0 new coil and module What device is telling the coil to fire and how do you check it?
If the coil pack is not telling the spark plug to fire on a 1993 F-150 5.0 engine, then check the spark plug wire itself. Also check to make sure the coil and spark plug wires are arranged in the right firing order.
Symptoms of a 1998 dodge stratus bad coil pack?
symptoms are: you can hear the engine missing, spitting and sputtering, loss of power...you can tell if it is a coil pack by unscrewing the spark plug that it connects to coil pack. when you look at your spark plug it should be a light grayish, white..this means the coil pack is working....it is best if you do this with new spark plugs, because your spark plugs could be bad. but you do this process until you find a bad plug then, that coil pack probably is the bad coil pack.
Where are the spark plugs on a 2003 f150 v8?
beneath each individual coil pack. You need to remove a coil pack to get to a spark plug.
How do you change spark coil on a 1998 Pontiac Sunfire 2.4 engine?
To change the spark coil pack on a 1998 Pontiac Sunfire with a 2.4 engine, first disconnect the battery. Then remove the coil pack and spark plug. The spark plug should also be replaced with the new coil pack for best performance. Insert the new spark plug, then the new coil pack being careful not to bump any of the many other electronic parts. Then reconnect the battery.
What is a coil on plug?
A Coil On Plug ignition system has a coil for each spark plug ( the 5.4 L has always been Coil On Plug - C.O.P. ) the newer 4.6 L are now Coil On Plug instead of having 2 coil packs - each coil pack handling 4 engine cylinders / spark plugs and using spark plug wires
Is there a spark plug wire coil?
No there is not a single spark plug coil wire like on the earlier vehicles. Instead, if you have the 5.4L you will find eight coil packs one on each spark plug. In addition, if you have the 4.6L you will find two coil pack blocks.
