Low Power Mystery (Ignition Coil Service)
March 6, 2022
It's no fun when your vehicle just doesn't run the way it used to. You may notice (especially in cold weather) the engine won't start easily or when it does start, it doesn't run smoothly. It may not have much power at all. You also may have had to stop at the gas station more often, a sign your fuel economy isn't what it used to be.
There could be a few different things that cause those symptoms, but one culprit could be a bad ignition coil. The coil takes the voltage from your battery and multiplies it before that power is sent over to a spark plug. That allows the plug to fire off a good jolt of electricity that ignites the fuel in your cylinder and powers the engine.
There's usually one ignition coil for each cylinder (or sometimes for a pair of cylinders). If only one of them is not pushing out enough electricity, it can cause big trouble with your engine performance. Other signs of a bad ignition coil include engine backfire, an oil leak and your Check Engine light coming on. When that light comes on and you have some of those other signs, you need to have your repair facility check things out fairly soon because you may be damaging your engine and wind up with a far more expensive repair.
A technician will check for a computer code to pinpoint which cylinder is having the problem. Using other diagnostics, the technician can rule out other components that might be causing the engine to misfire. Ignition coils usually last 100,000 miles/160,000 km, but other engine conditions can cause them to fail before then.
Your service advisor may suggest getting all your coils replaced even though only one is malfunctioning. That's probably a good idea in a higher mileage vehicle since the other coils may be close to failure, too. It's also wise to do that if your vehicle's coils are located in a hard-to-reach spot so you likely won't have to spend the money for that labor again when another one fails.
Charlie's Fast Lube Sparta
10 Northtown Drive
Sparta, Illinois 62286
618-443-6112
http://www.charliesfastlubesparta.com
Need Service?
More articles from Charlie's Fast Lube Sparta
The ?Man-Made? Engine Oil (Synthetic Oil Change)
July 7, 2025
If you own a newer vehicle, your vehicles manufacturer may require that it use synthetic oil instead of conventional oil. Synthetic oils are more stable, dont break down as easily, and provide better engine protection than conventional oil. All those things can prolong the life of your engine an... More
Do you have a Clue (Get the Most Out of a Service Visit)
June 29, 2025
When you head to the doctor, you probably have it in your mind what you're going to say about why you don't feel good. That way your doctor can use that information to diagnose your problem. You might want to think of that same approach when you take your vehicle in for a repair. Experts say wha... More
Busted! Air Conditioning (Air Conditioning Maintenance)
June 23, 2025
Your vehicle's air conditioning is something you count on when the weather heats up. But there's bound to be a day when you turn it on and one of these things happens: Only warm air blows out Cold air starts blowing out but then it turns warm on its own It's not blowing air at all It blows smel... More