Audi a4 ignition coil failure symptoms

If your vehicle is behaving erratically and you have problems with it running smoothly, it could be showing signs of ignition coil failure. The ignition coil takes power from the generator and relays it to the spark plugs.

This ignites the fuel and makes your vehicle run.

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The severity of the symptoms vary according to which of the ignition coils are failing. If your vehicle is backfiring, this can indicate early symptoms of an ignition coil failure. This occurs when unused fuel is emitted through the exhaust system.

P0354 AUDI - Ignition Coil 4 Primary/Secondary Circuit

If you do not address the issue, you can also do serious damage to your exhaust, resulting in unnecessary and costly repairs. Your exhaust may emit a black smoke and you may even detect the smell of gasoline. Check your high tension leads HT Leads. They run between the distributor and spark plugs.

Ignition coil failures result in 1 or more spark plugs not receiving the appropriate amount of charge. If you have trouble starting your vehicle in the cold, this is a good sign of potential ignition coil failure. You can run a simple test on the HT leads to check that there is in fact a spark going from each lead to each spark plug. If your vehicle is getting a lot less mileage for the gallon, it could also be a sign of an ignition coil failure. When less power is reaching the spark plugs, your vehicle will struggle and use more fuel to compensate for the lack of power transfer.

Trying to start your vehicle when the ignition coils fail will result in a rough ride. Your vehicle will cough and splutter regularly.

When you drive at high speeds, your vehicle will jerk and spit.

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It will also vibrate when you are running idle at a stop sign or intersection. With ignition coil failure, your vehicle will have irregular sparks emitting to the plugs to keep it running.

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This will result in stalling. When you bring your vehicle to a stop, it may just shut off totally, thus leaving you needing to restart it. If your spark plugs are worn out, it forces the ignition coils to operate at a much higher output. Keeping your spark plugs in optimum condition can reduce your chances of experiencing an ignition coil failure.

Some simple regular maintenance will save you a lot of money in the long run. If the gap in your spark plug widens due to normal erosion, it leads to an increased voltage being required to create a spark in the chamber. The increased voltage demands more current flow through the primary circuit and this increased current flow can overload the primary transistor.

Keeping all these components in good running condition is also a big help towards keeping your coils in a good working condition.Some ignition systems will use one coil to provide the spark for all of the cylinders, however most newer designs use an individual coil for each cylinder. As the ignition coil is the component responsible for generating the engine spark, any problems with it can quickly lead to engine performance issues. Usually a faulty ignition coil will produce a few symptoms that alert the driver of a potential issue.

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One of the most common symptoms associated with a faulty ignition coil is engine performance issues. As the ignition coils are among the ignition system's most vital components, an issue can cause spark to be compromised, which can quickly lead to performance issues. Faulty coils may cause the vehicle to experience misfiresa rough idlea loss in power and accelerationand a reduction in gas mileage.

In some cases the performance issues may even result in the vehicle stalling. Faulty coils can lead to engine performance issues, particularly misfires, which will trip the computer and set off the Check Engine Light. The Check Engine Light will also be set off if the computer detects an issue with the ignition coil signal or circuit, such as when a coil burns out or shorts.

audi a4 ignition coil failure symptoms

A faulty ignition coil can also lead to a no-start condition. For vehicles that use a single ignition coil as the source of spark for all of the cylinders, a faulty coil will affect the operation of the entire engine.

If the coil fails completely, it will leave the engine without spark, which will result in a no spark, no-start condition. Problems with ignition coils are usually easy to detect as they produce symptoms that will be quite noticeable to the driver. Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair.

Engine misfires, rough idle, and loss of power One of the most common symptoms associated with a faulty ignition coil is engine performance issues. Car is not starting A faulty ignition coil can also lead to a no-start condition. Schedule Starting And Charging Inspection. Service Area. Average rating fromcustomers who received a Starting And Charging Inspection.

Ignition Coil Symptoms, Problems, Diagnosis and Replacement - EASY DIY!

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audi a4 ignition coil failure symptoms

Failure of engine ignition coils, causing vehicle to lose power, and creates surging and shaking of vehicle, making it unsafe to drive. Happened suddenly while driving. Dealer diagnosed as failure of 2 of 4 engine coils. These were previously replaced under recall. Contacted Audi, but did not receive satisfactory answer. They will not cover repair, and they claimed that it was not a part that required regular replacement and will not state what the life of the coils should be.

Add Complaint. The contact has experienced this problem 4 times since and has either towed the vehicle into the dealer or has driven it to the dealer no faster then 20 mph.

audi a4 ignition coil failure symptoms

At the dealer they have replaced the ignition coils on the vehicle. The contact can provide copy of invoice repair if needed. The failure mileage was and the current was miles. After driving about a block after cold start, the engine began to hesitate. Problem got worse. After driving a total of about 3 blocks, the engine died. There were wisps of smoke coming out of grill. Upon opening the hood, discovered a small fire on top of the engine.

Dealer reports that the fire started because of a coil failure. Damage was limited to plastic manifold cover, because fire was put out early. Two failed coils in less than 1 month. May invoke MA lemon law on next failure if Audi refuses to replace remaining two defective coils. Email fm anne signorile NY re defective 4 coil which caused the vehicle to stall. The consumer requested that all the coils be replaced but the dealer refused.Updated May 13, Looking for a good online repair manual?

Click Here for 5 of the most popular options. Ignition coils are known as compact electrical transformers. Their purpose is to take the low volt current normally found in car batteries and convert it into a much higher voltage which is needed to ignite the fuel and start the engine.

Each spark plug in a car has its own ignition coil. The coil is either physically connected to the spark plug with wires or it sits on top of the spark plug without using wires.

The spark plug needs about 15, to 20, volts of electricity in order to form an electric spark that can ignite the fuel.

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This will also cause a range of other issues with the car and upgrading it to a new battery can see many issues go away. If a vehicle is behaving intermittently and is giving its driver some trouble in a smooth driving, then it could indicate that the ignition coil of that vehicle has gone bad. The failed or weak ignition coil symptoms may vary depending on the severity of the ignition coil failure. Here are some of the most common signs of bad ignition coil.

Backfiring caused by your vehicle can indicate the symptoms of the ignition coil failure in its early stages. Car backfiring occurs when the unused fuel in the combustion cylinders of the engine leaves through the exhaust pipe.

If this problem is left unchecked, then it can result in costly repairs. The backfiring problem can usually be detected by the emission of a black smoke through the exhaust pipe. The smell of gasoline in that smoke may also give away the ignition coil failure. Another sign of a faulty ignition coil is poor fuel economy. If your vehicle is getting noticeably less mileage than it was before, then it could mean that an ignition coil failure has occurred.

Engine misfiring will be seen in a vehicle whose ignition coils have failed. Trying to start the engine of such a vehicle will result in engine misfiring that sounds like a coughing, sputtering noise. When driving at high speeds, jerking and spitting will be seen in the behavior of the vehicle.Below are 7 of the most common issues with Audi, their solutions and cost of repairing them.

Failure of electrical components is a common issue with Audi. Owners have reported that the most common problems are failure of digital dashboard display or console, erratic lights and failed tailed lamps. Simple replacement of the components with OE equipments only works.

It is also among the prime reason behind engine misfire. The solution is instalment of good quality OE spark plugs and tuning of the engine to factory specs. Exclusive of labour charge Replacement of Catalytic Converters Catalytic converters fail primarily due to clogging or carbon build-up which solidifies and jams the exhaust flow.

Make sure that the mechanic gets down to finding the real cause. Keep the engine fine-tuned and maintain it regularly to prevent catalytic converter failure. The solution is replacement of either or both of the parts depending on which one is leaking. Loose fuel caps Loose fuel caps have been one of the underrated problems for low mileage. Make sure that you tighten the fuel caps after re-fuelling or replace it if damaged. These small things can add up to the mileage of your car.

Most of the issues that we discussed can be solved by regular maintenance of the car. Take care of your vehicle and it will be your trusted companion for years. Happy Driving! We are proud to have top customer ratings and have been serving since Preventing the 5 Most Common Auto Repairs. Common Audi Problems: What you need to know? Your email address will not be published. Home Sample Page. Feb Leave a Reply Cancel reply Your email address will not be published.

Recent Comments. Categories auto maintenance auto repair best cars foreign cars Honda Pilot Prius save money Subaru tips tires top rated cars Toyota transmission. Powered by WordPress.Audi cars are built to last for a long time. Unfortunately, just like all other man-made machines, they require ongoing care and maintenance in order to continue running well.

Forgone maintenance can come to a head when you begin to notice serious symptoms of malfunction in your Audi. One of the more serious signs that your Audi is in need of servicing is engine misfiring. Engine misfiring is a common symptom that can be due to several issues or origin. If you experience engine misfiring in your Audiit is critical to have the problem checked out by an Audi specialist who can perform a thorough, accurate differential diagnosis to isolate the source of the problem.

Here is a bit more information about engine misfiring in your Audi, including the common reasons for engine misfiring and concerning symptoms you should be aware of. Engine misfiring can be a symptom of a problem with one of the various parts of the ignition system. Usually, when engine misfiring occurs and the problem is traced back to the ignition system, typically spark plugs are the culprit.

Spark plugs can wear out over time, or can begin to malfunction due to another error in the system, where they are unable to generate enough power or heat to spark ignition. Another potential source of error is in the ignition system wiring. Again, wiring can become worn overtime, which is especially true in cars that commonly experience significant weather chances.

Another common reason for engine misfiring is clogged fuel injectors. Fuel injection systems have evolved over time, but they still encounter issues such as clogging. You can take your Audi to have the fuel injectors inspected for clogging, and they can even be cleaned or replaced if need be. When fuel injectors become clogged, the necessary amount of fuel cannot reach the engine to start the combustion process.

If the right fuel to air ratio is not achieved, the engine will misfire—often at the most inconvenient times.

Top 7 Common Audi Repair Issues and Costs To Fix Them

Your Audi automotive technician will want to inspect the fuel injection system to determine if the injectors are working properly. It is rare that drivers experience engine misfiring alone when it occurs; usually this symptom is accompanied by other troubling symptoms that can be alarming to drivers.

Audi vehicles in particular require a heightened level of care to match their heightened levels of performance.

audi a4 ignition coil failure symptoms

Therefore, sticking to the suggested maintenance plan for your Audi is the best approach to ongoing, consistent care. The Audi experts here at Pro Car Mechanicsserving residents of GardenaLong BeachLos AngelesGlendaleand Anaheim, CAfocus on providing the highest-quality specialized services in the area at a fraction of the cost that dealerships tend to charge their clients. Dear Valued Customers, After conferring with State and local officials and based on the relatively small number of personal interactions involved in our daily operation we have decided to continue to function and will be open regular hours.

We have taken aggressive measures to sanitize surfaces that are prone to human touch and will do so on a continuing basis. In addition we will make certain that as we interface with you at the counter, handle your keys, answer questions and clean your car and take payment we will maintain proper distance and sanitize the touch points in your car.

We are committed to your safety and well being and will comply with any restrictions imposed by authorities. We are here to support all of our clients as best we can for as long as we can. Don't hesitate to call the shop with questions. Ignition issues Engine misfiring can be a symptom of a problem with one of the various parts of the ignition system.

Fuel injection system Another common reason for engine misfiring is clogged fuel injectors. Other symptoms to look out for It is rare that drivers experience engine misfiring alone when it occurs; usually this symptom is accompanied by other troubling symptoms that can be alarming to drivers.

How we can help The Audi experts here at Pro Car Mechanicsserving residents of GardenaLong BeachLos AngelesGlendaleand Anaheim, CAfocus on providing the highest-quality specialized services in the area at a fraction of the cost that dealerships tend to charge their clients. Please follow and like us:. Give us a call today to schedule an appointment.The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the Audi A4 based on all problems reported for the A4.

The contact has experienced this problem 4 times since and has either towed the vehicle into the dealer or has driven it to the dealer no faster then 20 mph. At the dealer they have replaced the ignition coils on the vehicle. The contact can provide copy of invoice repair if needed. The failure mileage was and the current was miles.

Failure of engine ignition coils ,causing vehicle to lose power, and creates surging and shaking of vehicle, making it unsafe to drive. Happened suddenly while driving. Dealer diagnosed as failure of 2 of 4 engine coils. These were previously replaced under recall. Contacted Audi, but did not receive satisfactory answer. They will not cover repair, and they claimed that it was not a part that required regular replacement and will not state what the life of the coils should be.

Ignition coil failure on my Audi A4 21k miles. Per my dealer service advisor, car must be towed to a dealer. Lost several hours at work and was given substandard rental car, repair was not completed on the day estimated. Per Audi of America policy, only one coil is replaced, we will wait for another coil to prove faulty which almost everyone assumes will happen, even dealerI will have to wait at road side again, at which point Audi will replace all remaining coils.

Ignition coil failure. Received letter from Audi on March 3, regarging recognized ignition coil failures. Audi indicated significant failures with ignition coils and promised that in the event of ignition coil failure all repairs would be free. On March 11,I went to dealer for a regularly scheduled maintenance at 11, miles. I asked the service representative to replace the defective coils even though I had yet to experience any trouble.

I was informed that Audi would not replace the coils until actual vehicle failure. Approximately two weeks later, the coils failed and my car died on the road in zero degree weather. After a 90 minute wait, Audi roadside service arrived and took my car by flat-bed to dealer. I have been informed by the service representative that only the defective coils will be replaced. My vehicle has six coils. The service representative indicated that all coils will be replaced only when the car is in for a second coil failure.

The service representative acknowledged that a second coil failure is guaranteed. The other complaints on this website appear to bear this out. The nhstb should demand an immediate recall of these defective ignition coils.

Audi has been aware of this vehicle safety issue for months and appears to be quite content to let its customers continue to bear the risk of a catastrophic accident. I would like to know how many complaints of this nature must be written before the NHTSA takes action?.

It seems that the ignition coils are defective and Audi has not issued a recall to replace them. First ignition coil pack failed on 3. The dealer was very efficient and courteous, but that does not cut it with such a fundamental problem that could strike at any time. With so many customer complaints, Audi should be forced to issue a recall notice. Audi A4 1. I tried driving to the dealership but had to turn around and park it at home, for safety.

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Was towed to the dealership, where I learned it was a failed ignition coil pack, and I soon learned I was in good company: technician there estimated there were at least 85 cars -- all 1. German production was on 3 shifts to crank them out, worldwide.