Skip the auto shop - Our mechanics make house calls

Q: Misfiring

asked by on

Engine Misfire and shakes on idling. Not sure if it is problem with Injection Coil or Fuel Injectors or something else. I need someone to check and find out the problem first. Thanks

My car has 54500 miles.
My car has an automatic transmission.

The misfire and shaking at idle could be one in the same problem or two unrelated problems. The misfire could be a bad crankshaft position sensor or camshaft position sensor. Both of these monitor the speeds of the crank and camshafts which relays this info to the car’s computer. With this information it regulates the ignition and fuel injector timing. When either of these are not working properly, this can cause misfires and rough idle. I would recommend having an expert from YourMechanic come to your home to diagnose the misfiring and 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 accelerates like a full cement truck slow very slow

From what you've described, you could have clogged fuel injectors not giving enough fuel to the engine to produce power to go very fast. I suggest having the fuel injectors cleaned or replaced. The combustion chambers need to be cleaned...

Q: After my check engine light for my 2003 Honda Civic came on, I took it in and the code said it needed spark plug and ignition coil.

Hi there. Check the computer for any other codes to see if the same code came back or if something else popped up. If the same code came back, then there could be an issue with the wiring to the...

Q: How do I lean down the fuel

This may be related to many different things such as faulty or leaking fuel injectors causing the cylinders to be loaded with more fuel than what they can burn efficiently. This may also be related to a faulty mass air...

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...
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.