Q: What are the signs of a misfiring engine? I'm not sure if my car is misfiring or something else.

asked by on May 22, 2017

I have a check engine light on and recently my car has been backfiring or misfiring I'm not sure if I'm correct but it only happens when it's idling.

My car has 64000 miles.
My car has an automatic transmission.

Misfire can be a very broad term that can describe a variety of symptoms, but as far as the Engine controller is concerned, a misfire occurs when combustion is not taking place when the controller is expecting it. The Controller can sense the small accelerations in the flywheel with the firing of each cylinder, and if it doesn’t see it at the appropriate time, it will turn on the check engine light and store a misfire code. Some misfires will be very subtle and the driver might not even notice them, and at other times its more obvious as the engine shakes and seems to lack power. Misfire can be caused by something as simple as a vacuum hose being off to bad ignition components or even serious engine damage. To have your misfire diagnosed at your convenience. Contact Your Mechanic. they will send a technician to your home or office to check out your misfiring Mustang and advise you as to what should be your next steps.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

I was wondering if I could put a twin turbo.

Just go to Google search and type in 2016 Ford Mustang 3.7 turbos and a list of different possibilities for you will pop up. Since your car is brand new I cannot recommend any one place to get them.

My Tire pressure light came on this morning, then my check engine light came on after. Now my tires stall on a hill. Any advice?

Check your tire pressure as low tire pressure will cause the warning light to illuminate. Using a tire pressure gauge, if you do find low pressure in one or more tires, add air but you should also consider the possibility...

The speedometer needle falls down when I drive, what could be the problem and how do I fix it? Thank you in advance

This could be related to a couple of possibilities. The [instrument voltage regulator]((https://www.yourmechanic.com/services/instrument-voltage-regulator-replacement) regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this may cause the gauges in your dash to...

Related articles

A Buyer’s Guide to the 2012 Ford Mustang
The The Ford Mustang has been an iconic vehicle for half a century, and its latest styling and updates only make it more attractive and more popular with American drivers. While its exterior may not be quite as eye-catching as...
The Best Used Cars to Buy If You're a Fisherman
What What do anglers look for, specifically, in their vehicles? Lots of room, plenty of cargo space, and sometimes, the ability to handle rough terrain. Some fishermen also want the option of towing a boat. With that in mind, we...
The Best Used Cars to Buy If You’re an Electrician
As As an electrician, you have to haul around wiring, tools and equipment, and tons of supplies. You can’t get by with a small used car, or even a big one. What you probably need is a good used cargo...