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: Do its fuel injectors need to be cleaned and if they do, is there an effective way to clean them without removing them??

Hi there. This could be a faulty MAF (mass air flow sensor), which regulates the air going into the engine allowing for the proper air/fuel mixture. This could also be related to the idle air control module. This also helps...

Q: Acclerator pedal malfunctioned, misfired, service engine and loud noise

The accelerator pedal position sensor is a common failure item as well the the throttle position sensor in the throttle body assembly. Either sensor can cause similar performance concerns. The cause of these problems usually result in a diagnostic code...

Q: How would kerosene in the gas tank effect the catalytic converter?

I do not think it was kerosene you put in your tank. I would say it was diesel fuel. I've seen this happen many times where diesel fuel is put in the wrong fuel tank in the ground at a...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...