Skip the auto shop - Our mechanics make house calls

Q: Blinking Check Engine Light

asked by on

I have a blinking CEL. I disconnected each ignition coil while the engine was running and there was a drop in performance as I disconnected each one. Does this mean that the ignition system is not my problem?

My car has 110000 miles.
My car has an automatic transmission.

A: As you may know, the Check Engine Light can...

As you may know, the Check Engine Light can come on for many different reasons, including for the ignition coils being faulty. Many times, when there are no visible signs or obvious symptoms of the car running poorly, it requires hooking the vehicle up to a scanning tool to download any potential faulty codes in the computer in order to more specifically narrow down what may be causing it to come on. I would recommend having an expert from YourMechanic come to your location to diagnose the Check Engine Light firsthand and make the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My inside ceiling of my car is starting to hang, how do I fix the carpet ?

Hello there, the cloth fabric that lines the roof of your 2008 Honda Civic is also called the headlines. It is not uncommon for headlines to fail over time. The headliner is replaceable or in some cases able to be...

Q: 1999 Cadillac Escalade cranking, but not starting

Hello. There are a lot of possible causes of this. The most common being a bad fuel pump or crank position sensor. Both are very common. I typically start by checking the computer for codes with a scan tool and...

Q: Car doesn't run after Check Engine light came on

Hi there. When the check engine light starts flashing that means that the engine is experiencing a cylinder misfire. If the engine ended up stalling afterwards then you may have a fuel pump that failed or possibly a timing belt...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...