Skip the auto shop - Our mechanics make house calls

Q: Car takes longer to start, shakes, idles poorly & does not accelerate well going uphill. Check engine light is on.

asked by on

I gathered from online forums that the ignition coil pack maybe faulty. We had a tune-up & had this pack plus the spark plug & wires replaced 5 years ago when we had CEL associated with misfire. This time, I noticed there are tiny sparks coming out of one corner. Does it need to be replaced again? Or something else is the problem? How much would this cost me?

My car has 126450 miles.

A: The symptoms you describe definitely sound ...

The symptoms you describe definitely sound like a severe engine misfire. This is likely related to the coil since you have obvious signs of failure (arcing from the side). I recommend having a qualified technician, such as one from YourMechanic perform an inspection of the car’s starting issue, Check Engine Light, and shaking problem. The technician will then be able to determine the exact failure, what parts need replaced, and a complete estimate for the repairs. If you choose to book the appointment with YourMechanic, the initial inspection fee will be credited towards the repair.

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: Car says "run mode change system check"

Hi there. This problem seems to be unique to Subaru's and tends to be caused due to a failure within the ECM. The only way to pinpoint the source of this code and determine a course of action is to...

Q: Engine knocks

Engines can make a lot of different noises when there is something wrong. If it is extremely loud and consistent, your engine will need replaced. If it is ‘knocking” when the engine is cold and is quiet when it’s warm,...

Q: Head gaskets leaking

These engines, if turbocharged, can have various problems; the system over-boosted and blew the head gaskets, or the engine overheated and warped the heads, causing the gaskets to leak. Either way, this may have damaged the heads, so the repair...

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...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.