Where is my coil?
On my car
Experienced mechanics share their insights in answering this question :
Hi, thanks for writing in. The coil is on the left front of the motor or in the distributor on some models. If you do not see plug wires, then you have a newer model and have 4 coils over each plug. Hope this helps and best of luck!
How to Identify and Fix Common car Problems ?
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If your car has a distributor, follow the wire that is in the center of the distributor cap to find the igniton coil. Cars with coil packs usually have them mounted near a valve cover. Coil on plug ignition coils are typically placed near or directly over each spark plug.
On a modern car, coils typically are mounted directly on top of the spark plugs, so the high voltage does not have far to travel. Others mount boxy coil packs to the fender, firewall, or motor, with short leads to the spark plugs.
If you suspect the coil is dead, you can also remove the coil, plug it back in, and use an ignition spark tester like OEM 25069 to determine if the coil is firing. You can also use a multimeter to test resistance.
You can replace one coil at a time or all at the same time. I would however recommend having all spark plugs replaced with the coils so you do not have to remove coils twice.
A modern single-spark system has one coil per spark plug. To prevent premature sparking at the start of the primary pulse, a diode or secondary spark gap is installed in the coil to block the reverse pulse that would otherwise form.
How Long Do Ignition Coils Last? Ignition coils generally last 80,000 to 100,000 miles. However, as with most vehicle components, certain conditions like the ones below may cause them to fail sooner.
Ignition coils can either fail completely or fail intermittently. This means that you may have a coil that goes bad over time. Accordingly, even if your vehicle seems to be performing normally, you should watch for worsening gas mileage.
The ignition coil is the component that ramps up the voltage of the battery charge and makes it potent enough to fire the spark plugs. It`s a small but essential part of your engine and it will undermine your car`s performance if it goes wrong.
The Coil-on-Plug coil is usually mounted on the top of the cylinder head just above the spark plug. The coil is connected to the spark plug with a stainless steel spring connector and protective insulating boot.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
A/C compressor wont engage, weird electrical issue??
Go to fuse 21 in the engine compartment to see if power goes away when you test it while the compressor is connected. If the power stays above 12.5 volts, check connections to the A/C clutch relay in the power distribution center next to the battery. If the connections are good then replace the relay and retest the components. The connection should not be loose and may show signs of heat or arching on the relay and connector. If you need some help with this issue, consider YourMechanic, as a certified technician can diagnose the cause of this electrical issue and fix it accordingly.
I have a coil issue.
There is some sort of short in your ignition circuit on the number three cylinder. I would recommend further inspecting the wiring that controls the number three coil. It is likely that more wiring damage exists that may have been looked over. Once the short is found you should be able to resolve the issue by insulating the wires separately and preventing them from coming in contact with each other any more. If you are in doubt about this repair, consider YourMechanic for a check engine light is on inspection to determine why the fuse keeps blowing.
Ignition coil bolt can’t bolt down
The valve cover on that side of the engine has the broken bolt boss. The only way to secure the coil is to either replace the valve cover so you have the bolt boss to bolt down the coil, or to change the coil involved in the misfire.
If water is in the ignition coil should I replace the coil?
Yes, you will need to replace coil #3. Coils are made of a series of coil windings that are designed to conduct electricity and when wet this cannot happen. I would recommend replacing the ignition coil to ensure that the coil fires properly.
i attain a coil kit for my car and plugs what the purpose of a coil kit
Hi and thanks for contacting YourMechanic. Ignition coils for your vehicle are designed to supply voltage to the spark plug. To check if the coil is working, simply unplug the coil when the engine is running. If the engine stumbles, then the coil was working. If there was no change with the coil, then the coil was not working. Before determining if the coil has failed, check the spark plug for any burnt spots. This indicates that the coil is producing too much voltage. This can be caused by the spark plug fouling out, excessive oil or fuel in the cylinder, or the wires to the coil pack have no power. The symptoms of a coil pack failing is the engine having a hard start and the engine having a shake to it with a loss of power. Most of the time, if the coil fails, the computer will sense this and throw an engine light with a code p0351 for primary circuit A and / or p2305 for secondary circuit B. If you need further assistance troubleshooting your ignition system, then seek out a technician, such as one from Your Mechanic, that can assist you with your vehicle.
2013 CR-V EX-L. P0304 code. It is not the spark plugs or the coils. One of the wires of the connector to the 4th coil is open.
I would suggest going online and getting a wiring diagram for your vehicle. Most of the time, the coil wires will trace back to the control module. You can do a continuity, or resistance, test to figure out where the wire is broken, or what is causing the problem. I would suggest putting one probe on the connector and just start tracing the wire back until you find the break/short. Keep in mind, that if the wiring checks out, it is possible that there could be a problem with the control module itself. If this is something that you feel you could use a hand with diagnosing/repairing, contact a certified mechanic, like the mobile mechanics available at YourMechanic.com.
Misfire, loss of power, CEL comes on… Replacing ignition coils did not fix
Hello. The numbers you have provided did not yield any results through my search. If the part numbers are different, and the ends are physically different, then they may very well be different coils or it may just be an updated design. I would verify with a parts specialist or BMW dealership if the parts are compatible or not. Also, keep in mind that it may be possible that the coil packs are not the source of the issue. If the Check Engine Light is on I would scan the trouble codes as they may help shed some light on if the coils are the issue or not. A certified professional from YourMechanic can come to your car’s location to diagnose the Check Engine Light and loss of power in order to make the correct repairs.
Check Engine Light is on – P0302 and P0304. Ignition coil recently replaced.
The two Diagnostic Trouble Codes, P0304 and P0302, refer to cylinder misfiring. A faulty ignition coil, spark plug, wire, and so forth can cause a cylinder to misfire but there are other possible causes, too. Consequently, the only way to determine the actual cause or faulty part is to perform an engine diagnostic during which each relevant part and system is tested.
If an obvious and common cause, such as a bad coil, is not immediately found during the diagnostic, these additional possible causes of engine misfiring would have to be evaluated: oxygen sensor(s), fuel injector, burned exhaust valve, catalytic converter(s), poor compression, clogged EGR valves or tubes, wrong ignition timing, vacuum leaks, low fuel or low fuel pressure, leaking head gasket, bad camshaft or crankshaft sensor, bad mass air flow or throttle position sensor, and defective computer (least likely cause).
I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is misfiring and suggest the necessary repairs.