Skip the auto shop - Our mechanics make house calls

Q: The car is misfiring.

asked by on

My question is, do I need to replace the coil pack if I already changed the spark plug?

My car has 273290 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. There are many t...

Hi, thanks for writing in. There are many things that could cause a misfire, such as faulty spark plugs, a bad coil pack, bad injectors, a faulty crank position sensor or something else. I would recommend having an expert from Your Mechanic come to your home to diagnose the misfire to avoid repairing and/or replacing unnecessary parts.

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 has trouble starting and misfires.

A new ignition coil is a very likely suspect for this issue. I would recommend enlisting the assistance of a YourMechanic technician to diagnose your issue. Have the technician switch the suspect ignition coil with a known good one and...

Q: Throttle position sensor needs resetting

The ESP system may have a bad ground on the left hand shock tower causing the problem to happen intermittently. I recommend seeking a certified mechanic, such as one from YourMechanic, to come and test your vehicle for you and...

Q: where is the ecm located in my 2001 lesabre and how do I get the part number off of it

Hello - to answer your location question, the ECM is behind the fuse and relay block of electronics under the passenger side of the dash (behind the glove box). The ECM is behind the other electronics, mounted flat against the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.