Skip the auto shop - Our mechanics make house calls

Q: Check engine light keeps coming back on

asked by on

My car has around 90,000 miles and the check engine light is on. There were codes that indicated there was misfiring of cylinders. I had them replaced. The chack engine light appeared again. I used the BG and Seafoam injector cleaners. The light reset and then came back on yet again. The coil in the cylinder 1 was replaced. It didn't help. What could be causing the check engine light to keep coming back on? Thank you in advance.

A: Hello. I would need to know the exact codes...

Hello. I would need to know the exact codes to be able to give good information about this. If you have a reoccurring misfire code, then a compression test needs to be done to see if there is an internal engine problem. If the misfire is for multiple cylinders, then you may have a fuel system problem, or more commonly a timing belt problem. Both of these are common problems on this vehicle. Knowing the codes is the only way to know for sure. If you need to have this looked into further, consider YourMechanic, as a certified mechanic can come to your home or office to do an in-depth diagnosis of the Check Engine Light and perform the correct 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・Fair and transparent pricing

Get a quote

What others are asking

Q: How would a failing TPS sensor affect how my car runs...?

Hey there. Since the throttle position sensor is responsible for relaying information to the ECM and has a hand in trimming fuel / air mixtures, ignition timing, and other critical functions that control the engine's operation, a failing TPS sensor...

Q: 2003 Kia Sedona starts and runs for one minute then dies. Restarts and does the same thing. Threw a code the other day of cylinder

Hello. Thank you for writing in. At first the issue sounds like an electrical problem. There are a number of sensors that will cause the engine to stall. Some of them are not monitored by the computer and will not...

Q: Trunk won't lock

Hello. When you say the trunk won't lock, I am assuming that the trunk lid will latch closed but you are able to open the trunk after remotely locking the car. If your car is equipped with keyless ignition, be...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.